I play Metaknight. To me, he feels like sheik in melee. Fast but without an overbearing amount of acceleration. I.E. Fox. I couldn't control him in melee and I can't really in Brawl either. Not that he's bad, he's just not really for me.
So after i tried sheik in brawl and found out she sucked so hardcore it wasn't funny... I switched to Diddy Kong, and he's pretty good, but I took a much better liking to Metaknight. After I learned how to kill with him (dsmash, upb and nair for the win), I got pretty good.
Also, Ike is amazing. For fun? Amazing. He's the character that unlocks the "manly man" in me, so to speak. and as cheezy as it sounds, yelling "IKE SPIKE" is fun. Its even more fun when the spike goes off too, heheh.