1. Jean Grey/Phoenix
2. Gambit
3. Polaris
4. Angel/Archangel
5. Nightcrawler
6. Iceman
7. Dazzler
8. Storm
9. Rogue
10. Havok
1-4 are bold because they're locked in their positions, and I can't see them changing anytime soon. 5-10 can fluctuate, tho Kurt and Bobby are pretty solid where they are, except switching places sometimes. Ali's gained a lil' ground, mostly because 'Ro has lost quite a bit. She used to be my #3, but I still love her and can't ever see her leavin' my top 10. Rogue and Alex should be safe, they've been in my top 10 for over half a decade now. Although, the following HAVE piqued my interest A LOT of late:
11. Psylocke
12. Colossus
13. Northstar
14. Hellion
15. Dust
16. Cannonball
And an honorable mention must be given to the Scarlet Witch! I know Wanda's technically more of an Avenger, but she got her start with the X-Men. Plus, she's just so awesome in the new Wolverine & the X-men animated series. If she were officially included, somebody would be booted out of my top 10.