Sax,

I have not played the Mo6 (or Mo8) so I am not known with its OS. However, I am in two minds about upgrading to either Mo8 or PSR3000 successor. I expect their price to be similar. The qustion is between 88 weighted keys and 61 (?) keys arranger.

I discussed the matters with a Mo8 owner (that's our synthzone fella Squeak) and he warned that the Mo8 OS is a very sophisticated one. Unfortunately, Squeak disappeared from SZ

There are plenty of yamaha synth users. You could get much more feedback. Please, visit http://www.motifator.com/ This is the "INTERACTIVE SUPPORT FOR YAMAHA MOTIF SERIES INSTRUMENTS"

Regards,
George