Black Panther: the current one looks hot without the cape
Havok (current run)
Ms Marvel
Cassandra Nova: I know it's just regular jungle attire, but it's cool and reserved, much like Prof x's suits. She's such a smooth villian and one of the coolest in a long time I know a lot don't like her, but she's cool to me.
Magneto: his costume always looks good. I'm glad marvel never strayed to far away from the classic uniform.