Got a used Azonic DS1 that I've been thinking about selling. It's got horizontal dropouts and a mech hanger so you can run it single speed or geared. It's got disc and canti mounts - though I don't have the canti posts any more.
Lovely light and strong frame. It's quite scratched but no dents.
Although it's a dual slalom/jump frame my wife uses one as an XC bike. They're really nimble.
Looking for £25 plus postage, so it'll be about £35 in total.
Can do some pics later if of interest.
Rich