Here is my input on this:

1) I liked the SAX presented by keyplayer. But because it is a light sax that is usually used in easy listening music. It has the breath background which I like as well.

2) When I am playing live, I avoid the SAX sound for exactly the reason scott shared. For some reason, people are willing to listen to a flute or violin or strings but not SAX. And if I do, they always come and determine that it is fake regardless of how trained they are not. (do I type like Yoda?)