rosetree,
Yes I like the M3 exp sounds very much. I had a PA2XPRO and many sounds suffered from poor sampling/programming.
Example...you play a nice Sax solo, and some notes now & then have a honk sound instead of the same sound as the others...and sometimes vibrato varies so much note-note that it sounds horrible. OK for fast stuff...NFG for nice orchestral or music with nice slower melody's with feeling. If they are going to do the sampling with vibrato...the speed & depth need to be similar.

The thing is...talking Pianos or any thing...these high end company's know how to do terrific sounds...and they have them ...they sometimes only use older samples or are afraid to put in their best sounds into an arranger because the PRO division does not want the arrangers to sound as good (fighting among the divisions). I do think that has gotten better in recent years...and sharing seems to be better.