Ok, kinda random, but here's the start to a list of guys who are true masters of the horn but don't get NEARLY enough mention.
Courtney Pine (check out 1992 release 'Underground')
Jeff Coffin (Flecktones)
Andrew Love(Memphis Horns)
Lenny Pickett (only brought up in discussions about altissimo, what a beautiful sound!)
Johnny Hodges(often gets left out of great alto players lists)