gjkung : I believe kith's talking about the Onyx 1640 something.
haha your qn regarding sample rate. as you know CD = 44.1khz 16 bit. most ppl record at 24bit/48khz. some do it at 24bit/88.something khz, depending on preference and according to their own reasons/theories why.
but on a general scale. 24/48 will be enough. even my recordings are done at 16bit/44.1khz, lower in quality but I try my best to make it up in mixing to sound good so people don't bother so much with it. you gotta remember though, recording at 24/96 or even 192khz will eat up loads of hard disk space. be prepared.
soft : he wants a 16 channel recording thing. live mixer for live gig use. and at the same time he wants to record the live gig (guitar bass 3 mics, vocals 2 mics, drums 9 mics, etc) multitrack.