andrew's got it right. if you like sax jazz, trane's tracks are easily some of the best. parker's a little more uppity (bebop is generally a lot more uptempo, but his ballads are fantastic). if you want more jazz/rock fusion on the sax, breckers are the best.
bitches brew (miles davis, don't remember which iteration of it) is considered to be a seminal record in the field, crossing most of the boundaries that it doesn't break entirely.
if you're looking at piano only, guys like hancock, bill evans, and o-pete are always fantastic.