I too have chased "the sound". In my experience the great sounding sample systems for instruments like sax, trumpet, strings and the like is that to get the great sounds you have to learn how to play the sample system. All the nuances that everyone finds missing in the midi players are missing because they have to be played in to get them.

The sample systems have ways to control the breathyness, the scoops and the bends and the little approaches to the sweet notes, all the nuances that a player puts in because it sounds good. To get the samples to sound realistic you have to learn hope to play the dam sampler, no easy task on the ones I have seen. If you just throw some midi note at it from a BIAB part you will find that a lot of the wow factor stuff you marveled at on the web demo is missing.

Intel i5, 8 GIG, M-Audio NRV10, M-Audio BX8's, Cubase, BIAB, Win 7