PA can load and has triton programs.so sound wise non piano sounds are nearly as good as motif in general.some synthsounds/pad are better.but motif(more rom) sounds great in orchestral area too.
motif also has breath controller input-good for wind/reed solos.

you do have to listen and compare.

but best bang for the buck now is PA50 for your above needs OMHO.

PA sounds as good as it is in demo.

[This message has been edited by jamman (edited 11-16-2004).]