I used to have a MC09.. Phraselab - Was great fun.. Had all the 303 sounds in it. I'm sure purists would have a heart attack over it, but if you find one 2nd hand, pick it up.

Roland MC-09 PhraseLab | Vintage Synth Explorer

I got mine for €50. Sold it on to pay for something else. Great fun. Lots of control.. but obviously not the real thing.