I enjoyed bust the topps chrome as you can get them for cheap and can get some nice rare refractors, but if your after rookies then I think you answered your own question
I've opened both Stadium Club (in the hope of Lone Star Sigs or Co-signers {though I'm not sure what were redemptions}) and Upper Deck (in the hope of Game Jerseys/autos) - didn't have much luck apart from a Beam Team of Kidd but they're still reasonable cards. But yeah, the odds are against you.