They're all good. My only problem with Gambit is that he has an attack where he throw cards into the ground, but they apparently don't explode until you do another explosive attack to them? It's weird, I initially thought they were mines which would be cool, but it's a bit useless when you has such a chaotic game. I'm not entirely sure that's how they work but that's what the description indicated. That being said, Gambits more standard card throw is awesome and really effective.
I also love the small details they add, when Iceman, Phoenix, and Cable block they bring up a shield. And Iceman is always ice sliding which is a nice touch.
