Hi Bachus,
with my soundfonts, I actually came across a company that had recreated some of the Korg synths. Matrix, M1, & some Triton. They were really quite good. Pity no one has thought to sample Yamaha.
Personally I'd be happy with just the correct PSR drum sets. The megavoices have been the least of my problems.

Hi Lee
Unfortunately , I've got the time, but haven't got the know how as far as sampling goes. darn haahaa

best wishes
Rikki