I've always loved Wolverine, Cyclops, Mystik, Rogue.
Wolverine is just a bad mama jama (don't know if I can swear xD)
he is just so cool! The claws, the admantium in his body, his cell regeneration. I can't explain my love for him lol.
Cyclops has always been one of my favorites I guess because I though he was really cute. I loved how he could shoot lasers from his eyes, sucks that he can't control it though.
Mystik can shape shift. That in itself deserves to have her mentioned. It is so cool that she can disguise her voice and body to look like anyone she has come into contact with. Ultimate Ninja anyone?
And Rogue... I can't explain why I like her. She basically drains the life force from other people. She cannot touch others without hurting them and can never kiss anyone unless something was protecting her lips. Its a great power with a heavy burden.