Wolverine - for the longest time he was my favorite character all together (I even have his first appearance in Hulk #181, first print) and just represented a hero that knew what the right thing to do was but had his own inner demons to deal with. My second favorite X-man would probably have to be either Havok, Joseph or Maggott.
Havok had zero tolerance for anything and was virtually the anti-Cyclops. Intriguing character.
Joseph because I've always been a huge fan of Magneto and loved the de-aged (later revealed as a clone) Magnus trying to attone for his past sins even though he didn't remember any of them.
Maggott - all I can say is that the character was awesome, I mean he even scarred away the Jugernaut! Extremely underrated and had a lot of potential.
"Never give in--never, never, never, never, in nothing great or small, large or petty, never give in except to convictions of honour and good sense. Never yield to force; never yield to the apparently overwhelming might of the enemy."
- Prime Minister Winston Churchill
"Si vis pacem, para bellum."