Update after some more time passed...
BOSS Dual Cube Bass LX... barely gets used after all. It's the loudest and the only one I'd consider from the lot if I wanted to play in the park, and it's fun to just trigger the basic rhythm machine to practice, for timing, but I'm not in love with it. I can EQ it to be more pleasant, but I just can't shake this feeling that even with all FX etc turned off, there's 'something' still going on. Between the unit itself and the bluetooth adapter I could have saved around £300... ah well, now I now.
For busking I actually have a QTX QR10, rechargeable battery powered "mini PA" speaker. It's not the best sounding bass amp, but it works well enough, and with a little Zoom unit then you can make this sound pretty nice, and it cost me about 1/3-1/2 of what the Boss cost... and this one IS loud enough for busking with a 7-piece band.
Caline S8B is great. Small, rechargeable battery, and it can sound very good. I like the 2-channel thing. It lives on a shelf above my computer monitors, the front-facing controls make it ideal for that.
But it's the other two that really see a lot of action these days.
The Joyo one was the cheapest, and it sounded quite alright. The one drawback was the lack of bluetooth. It does have an AUX socket, so I got a little rechargeable bluetooth receiver for under £10 and now it's bluetooth-equipped
And the Headrush FRFR-GO... I've been using it a lot with guitar and multiFX to provide the sounds. I then found this little M-Vave Tank-G... basic FX, nice selection of amp sims and IR cab sims (it can load 3rd party ones too), it runs on an internal rechargeable battery, which is nice to reduce amount pf cables. I normally use it with a guitar wireless system, so the Headrush is wherever (internal battery), with the Tank-G plugged into it, and I can move around.
The Tank-G is around £40, and it acts as a USB interface for recording. So with one little speaker, the Tank-G and a phone/tablet you have a pretty portable practice and recording setup.
If I had had access to something like this when I was a teenager, I would probably still not have a girlfriend 😂
(ok, slight exaggeration, but you know what I mean )
edit: oh, I forgot, although the Tank-G is designed for guitar, I made a couple of presets for bass that sound quite good through the FRFR-GO