Feature:
Man! Midi, extra USB port, ins/outs, headphone, this was the unit that had it all when I bought it. Right now the lack of mic input is a bit of a limitation.

Quality:
It's a bit light weight, and the headphone output feels like it'll ultimately go, but in general it's fine.

Value:
At the time it was worth the money. Right now there are plenty of alternatives.

Desirability:
It looks cool, has many features. But "I want it to work".

Sound:
It would sound fine if I could get rid of crackles and pops. Searching the Logic forums at Sonikmatter tells me that many people have problems. I've tried a million suggestions, and ultimately can't get rid of popping noises. Set the buffer size minimal, and you're almost rid of them, but then my G5 can't keep up with large polyphony.

Support:
Let me get back to you on that.

Overall:
I'm shopping for something else. Even intermittent pops are pops and they are driving me crazy. This seems to be largely a problem with Logic on the Mac, but I've heard other hosts and platforms with the same problem.