I was looking through ebay for TB-303's. wanking material only really, I don't quite have the money for a real one yet. I came across the x0xb0x, so I did some looking around and I came across it in Kit form. I reckon I might just go for it, FTW.
Here is a link to the page:
http://www.ladyada.net/make/x0xb0x/
and here are some sample comparisons:
http://www.ladyada.net/make/x0xb0x/samples.html
What say ye?
(P.S the home made PA is still in the works too... updates soon)