Jack

I really wouldn't worry too much about the topology. Apparently early switch mode ones could introduce some noise, maybe some super cheap ones still do, but I also think I read that's been tackled in the pedals themselves with them being designed to filter out the squeal. Obviously if you raid the depths of Aliexpress or Amazon then you will be able to find some absolute garbage but there's no major reputable brand that will sell you a bad power supply these days. Unfortunately, there's plenty that are unsuitable for other reasons. Having said that I looked on stinkfoot and apparently the Zoom only draws something like 150mA, so that's way easier to power than I expected and you should have a few more options open to you. Like for instance... ... they look great.

You can see how much space you need on Pedal Playground so have a play on there, add the pedals you need and see what takes your fancy for a layout. When it comes to power, you really do get what you pay for and unfortunately they are expensive things. The critical thing for you are the Zoom (and possibly the Ditto) pedals. With digital pedals you really want them on an isolated output and so it would be best to have at least one output that's isolated from the rest for the Zoom. I don't have any experience with the ditto units, someone else may be able to advise you if they also need to be isolated, both from the rest of the pedals and also from the Zoom. The rest should be able to share. Do be careful with power supplies. The voltage and polarity of the power supply's output and the pedal's input needs to match EXACTLY. The amperage of the supply needs to meet or ideally exceed the draw of the pedals. There are websites that can tell you what your pedals need in terms of power if you don't already have them. Just google something like 'tc ditto power draw'. The Lekato that you link to looks as though it doesn't provide enough power for at least the Zoom (which I bet needs more than 200mA). It is possible to buy adaptor cables to do pretty much whatever you want though, so you could 'add up' several of the 200mA outputs on that board to get the required power for the Zoom, but now we're getting into the weeds and you already have too much to think about. And the design seems odd, why would you want the cables hanging over the edge like that? Personally I have used and liked the Pedaltrain and the Templeboard boards, as well as Thomann own brand, Cioks and Strymon power supplies. If I was you and on a budget then I would either make my own board from whatever I had laying around or buy one of the pedaltrain style copied from Amazon. Then I'd hope the Thomann branded power supplies did what I needed.

I just get rid of the cases. If I know I'm keeping a bass "forever" then I sell the case and it lives in the thinnest of Thomann gig bags as essentially a dust cover. That way you can really cram them in. When something leaves the house it goes in one of my two Mono bags.

I've since learned about PA stuff to actually think he's a bit 'out there' on some points* but in the early days I learned loads from Dave Rat's youtube channel and RHCP tour blog. One of the things that stuck with me was "channel eq for the actual channel and mains eq for the room, you shouldn't really need to move the channel eq much from room to room". * I mean, I don't feel qualified to say he's wrong. He's mixed the biggest bands and the biggest venues all over the world and I ... haven't. But the dude is a little loopy.

Nope, if it's a proper auction between private sellers ebay adds extras. Here's my selling information from something I sold last.

Yeah I was in a band where the guitarist trailed a power brick right the way across the stage for his multi fx. Just looked flimsy. When done right though (iec to board, board low voltage wired in neatly) I prefer it to batteries.

I like the look of your pedal. You're on the right track for me but people have so varying different needs that I would focus on making a good product rather than something for everybody. As for DI boxes generally, that depends on their designed application. The ones made for bass often run on 9v pedal power. Tech 21, MXR, most of the amp manufacturer's pedal preamps, etc. The generic, instrument agnostic, studio/live use ones don't though, and many bass players use and prefer those. Countryman, Radial and the like don't have a dc input and use either phantom or battery power. A little annoying as they run on a 9v battery. Maybe all I need is a brave pill and a dremel.... Edit: yes, phantom power is DC. Shhhhhhhh.

I've got no problems with an active DI at all, I've got problems with 9v batteries going dead and the lack of phantom power at my (admittedly bottom feeder) level. My preferred solution would be a DI that ran from boss style power like other pedals. I actually built one using a prefab board, and I own the Harley Benton too, as well as the usual pedal preamps that also include an XLR output like the Sansamp.

Anyone going to The Wildhearts in Newcastle in December?

I dunno, that crowd looks bigger than any one I've ever drawn.

It's the boring answer but it's the good answer. If you can sell the tuner then a Stomp is the same £250 or so as the bddi would cost you. If you can bring yourself to sell the Radial as well then you probably will only need to add the £150 budget. Does everything, fits in on a high end gig... Otherwise I agree with the LMB3 and I would also suggest the TC MojoMojo. Both great pedals and together (used) well below your budget.

How very on brand.

The derail continues. You seem to have a real point to prove here but I don't know what it is. Ok, one has a really loud saxophonist on a particular stage, fine. Now, will that stage be overall louder or quieter if a hypothetical two guitarists and one bass player are playing through backline or playing through digital modellers straight to the board? If the guitarist can't hear themselves they are free to ask the saxophonist to play softer whether they have backline or not. BUT, if the saxophone won't play ball then the guitarist might want to turn themselves up to match. When using backline this affects everyone, when using IEMs this only affects the guitarist. You are now going to say "yes but then everyone will need to turn up their IEMs and risk hearing damage" and again you are correct but you are correct whether there's IEMs or not. The problem in this case is the loud saxophone, not that somebody else in the band is using IEMs. Again, nothing about live sound is perfect. I reiterate that you can have good and bad mixes using every single approach that I can think of and probably a few that I can't even conceive of. I posted in this thread in response to a post suggesting that ampless was only for big gigs, I dispute that. None of the rest of this is really relevant. As you correctly point out live music can be really loud, dangerously loud. You don't have to go to a metal show to get hearing loss. I am in favor of more options for more people to not get hearing damage. Ditching the backline is one possible way to achieve that, there are plenty of others.

Nearly everything true there is true of bands using backline and those without. The only difference is that you either need to find one (hopefully competent) person to control the mix or 4+ (hopefully competent) people to control themselves in the mix. Guess which is more likely? You are right that most sound techs are subpar, what are the chances you find a band that's entirely comprised of good ones? This thread about preamps is in danger of becoming "the pros and cons of ditching backline thread #18662" but I would argue that it's possible to get a bad mix and a good mix using either approach. What can't/won't/doesn't happen in an ampless setup is volume creep and volume wars where everyone turns themselves up throughout the night. Maybe you start with a quiet drummer, maybe you start with a loud drummer. What you don't get is a drummer who keeps hitting harder and harder because that bloody guitar amp is drowning them out. On drummers and electric kits: budget guitar modellers from Nux/Hotone/Valeton and the like are exceptional. Your own Paradriver is brilliant. Great electric drum kits are hard to come by and very expensive IME.