I did some work on a music video last year and rather than paying me in cash the director asked me what would i really like to have and i said this (basically coz i saw nels cline using one [actually the original analog version, but id never find one of those] and it was an amazing):
with this:
and i have to say, it the BEST THING i use with my guitar... you can create up to 5 minute loops with it (this being the digital reissue of the analog version that came out in the 70s), or use it as a simple delay, and then bounce yr loops back in reverse and pitch them up and down n stuff... i end up doing a lot of alvin lucier sitting-in-a-room inspired loop decay with it. the only annoying thing is the automatic count-in feature (i wouldnt dare try to sync a live loop with a drummer or something) but other than that it is the shit.