well... who is going to be the one kicking off the samples? there are ones that are better for drummers. they have trigger pads so you don't have to pay as much attention when hitting them. $$ wise, you can just get a simple one. I have this one:
http://www.zzounds.com/item--KORES1MKII (I have the original version)
you can find them for like $189-200 on ebay. I think you can load 64 samples on it and 2 of them can be like 30+ seconds. the only thing is that it still uses smartmedia.. wtf!
there are pedals that will do one sample up to 30 seconds.
I liked the korg cause you get a sequencer for free.
you load it and then click one of the 16 buttons in the front. each one is loaded with a different sample. also you get echo/reverb effects too