I've owned the MPS+ for four years. Yes, it is a wonderful keyboard for live performances with master controller features other synths simply don't offer.

I haven't tried to re-create the Vintage key sounds because I found the organ patches and waveforms not to my liking (I also play Hannond B3s and H-112's). I bought a Voce V3 two years ago for my traveling organ sounds.

EMU does sell aftermarket cards. Tell them what you're looking for and they can probably help. You could also try Greytsounds (on the web). They make aftermarket sounds for the MPS+.

--okj