Mine:
1) 90s X-men Blue Team: Cyclops, Wolverine, Psylocke, Gambit, Rogue, Beast and Jubilee
2) Mike Carey's "Supernovas" Team: Rogue, Cable, Iceman, Cannonball, Mystique and Sabretooth
3) Grant Morrison's New X-men Team: Cyclops, Jean Grey, Emma Frost, Beast, Wolverine and Professor X
4) Classic X-men 80s Team: Cyclops, Storm, Wolverine, Colossus, Nightcrawler, Kitty Pryde and Rogue
5) Claremont's "Revolution" Uncanny Team: Storm, Jean Grey, Cable, Gambit and Beast