MOTM

You're right when you suggest that your virtual instruments are good 
enought to fool most people, but not expert ears. The patches are as 
realistic as any non-sampled patches that I've heard, and they seem 
to support a broad range of expressiveness, something that's 
difficult with non-percussive sampled sounds. 

What are your goals with reproducing traditional instruments? Some 
might question spending a lot of time simulating traditional 
instruments, because it's sort of reinventing the wheel.

It's clearly an excellent intellectual challenge, and I'm sure that 
it gives you greater technique for expressive synthesis.

It's very interesting, too, when virtual instruments are used in non-
traditional ways, or to do things real instruments or players can't 
do. Wendy Carlos has done some great stuff with virtual orchestration 
playing in alternate tunings. It sounds normal, but completely alien 
at the same time. 

I hope you have time to share your thoughts - I'm always interested 
in why people approach synthesis like they do, not just what 
equipment they use.