I think the MM6 would make a good "add on" board for anyone wanting Classic Motif sounds, but I wouldn't rely on this unit for any serious work though.

Yammie did cripple it a bit with some of limitations. The included software will ease things up a bit. I don't know how they did it but I was surprised at the response I got from a Yammie rep regarding the 32 note poly too. He said that he found that even some of the bigger voices only use 1 note poly.

Again I think the MM6 will only be an add on board just for the sounds really. If you're interested in really editing the sounds, setting up performances, preset and user chord templates, arps both preset and user, and a much much much sturdier construction I would suggest looking at the Roland Juno-D. It's more pro than the MM-6 and it too ships with sequencer software--but there's a huge benefit to the Juno-D and that is it also ships with Juno-D editor software. You can use the editor and the sequencer application at the same time. Very handy because you can have the editor software set to "Performance" and have access to ALL 16 parts on one screen and each parts parameters. Plus the Juno-D sells for the same price.