Don, re the 'phasing issue'... Do you have one or two towers? I think most of the comments came from people trying to use them in stereo.

The rest might come from users used to working in stereo (either from their PA or just listening to the built-in speakers) and were unused to exactly what their wonderful stereo sampled pianos actually sound like when collapsed down to mono (on one PAS). Most of them sound quite different in mono...