Please don't take this comment the wrong way... as it's intended only as information... not criticism.
I come across many people who ask... "How do I make my Sax/strings/guitar/flute/bagpipe patch more realistic?" The answer lies not in the patch but in your performance. One of the more difficult techniques to master with a keyboard is emulating the playing style of another instrument. You don't have the same interaction with a keyboard to "breathe life" into a sound as you do with a guitar, violin, saxophone or whatever. There is a reason you can get a whole variety of performance controllers for keyboards (mod lever, pitch bend, volume pedal, breath controller, D-beam etc...) and that is to find the most natural way for you to inject that "life" into your sound. I'm not a huge fan of pitch bend levers, for instance, and much preferr to use aftertouch (preferably polyphonic aftertouch) to bend notes as it "feels" more natural to me.
So, too sum up, you should study how a violinist, cellist etc play their instrument... when they slide notes, when they add vibrato, how they introduce the dynamics and try to mimic that with the controllers at your disposal on your keyboard ... simply playing triad chords in a "pad style" will never be close enough to the mark. Indeed, a simple saw-pulse patch played with suitable "expression" can sound much more realistic than a faithfully sampled violin... Wendy/Walter Carlos is a prime example of this. Only then will you have a more "realistic" sound. Someone posted a song on the forum some time ago (I think it was Rordog) with the most amazing brass accompaniment... but the reason it sounded so good was the attention to the way a brass player actually plays their instrument rather than the patch that was used. I also remember attending a Yamaha demo session at a British Music Fair many years ago and being enthralled by the demonstrator playing a sax patch on a DX100 with a breath controller... the basic sound of the patch was only slightly reminiscent of a sax, but when he played it with all the expression it was undeniably a superb sax solo.
I hope that helps... and hope I didn't misunderstand your question.

)
Dave
http://www.drstudio.demon.co.uk/
"Musicians fall into three categories: those with a physical block, those with a mental block and those with a wooden block". Unfortunately, I'm in the 1st category!
Dave
::
http://www.drstudio.demon.co.uk/ ::
http://www.myspace.com/daveboulden ::
"Musicians fall into three categories: those with a physical block, those with a mental block and those with a wooden block". Unfortunately, I'm in the 1st category!