I've been using a WM for a year or two now, and just picked up a BS-1 a few days ago - out of curiosity an that fact that it was only 20 quid!
It's definitely worth a go! Like Kev mentioned above the Pinch control doesn't work quite as well/get as tight but otherwise it makes the right noise. You can definitely hear the price difference between the two when you compare them but the Little Bear is a really good alternative if you want to save £100+!
I'm wondering what experiences any of you other WM guys have had with putting it behind other pedals? It seems to be standard practice not to put Boss or other buffered pedals before them so that the impedance isn't lowered - does only having true-bypass pedals before the WM make any difference? I usually use an OC-2 before the WM but I'm considering switching it out for the Octamizer.
I've been using an original Prometheus for a while now and it's one of the fattest filters I've played with! Definitely worth a try. The only drawback if any is that that controls are very sensitive so keeping a really fine setting takes a good memory if the knobs get knocked askew when you're on the go. Haven't tried the updated version but it looks way too soundbloxy for me lol.
Mint Condition, bareley used Nano Bass Big Muff. Selling as I got it as a spare to save taking a whole board to some gigs and just never really used it. It's cheap and cheerfull, sounds great!
£35 + postage, or collect in Edinburgh