Alesis SR 16 (I had one, It was cool. It's got workable sounds and has 4 outs) $200
Boss SP 202 I played with it at a local music store. I loved the snares in it!) $2?? (Floor Demo)
Boss DR5 Costly $350 it's got nice sounds
I have the RY 20 ( I love this Lil be-yatch) 4 group...