At the time a bought my MU90r I really needed a synth that allowed me to do all the things I wanted to do. That means no limitations and a terri- fic sound. At first I didn't have a specific synth in mind, but as soon as I'd played on the MU90r for the first time, I didn't hassitate to buy it. The overall sound is really mind-blowing and the performance mode allows you to steal the show on stage. The DSP's and the digital filter let you create sounds you never thought possible on a XG synth. And the best part is that it only costs 1180,- Dutch guilders (about $590, I think).
Comments About the Sounds:
The standard GM and XG sounds are quite good, although I find the acoustic pianos a bit thin. The digital and analog synth- sounds are really great.
(Thanks to Nathan for this info.)
and Marco for the pic