Hi:
As a former sax player I find the SA2 Breathy and Jazz Tenor sax on the Tyros 3 the best of all emulations. It was in fact the key to my purchase of the T3. I found no other product that came close except possibly the PA2X. But it also missed the mark. On the other hand the Alto Sax which is just an old sample and is pretty bad. The Soprano Sax samples are fairly good though.
Also the SA Clarinets are very good as well as the Acoustic Guitars. If I struggle with anything it's the Piano. The T3 Acoustic pianos are just missing warmth and I have yet to tweek them to a point where I am satisfied.
String sounds in general are too bright and aggressive. I can only use Live Strings with some modification. So I wish that area was better.
Joe