A tough question... I used to think Ike was my best until I started playing people from this forum. He's still high on my list though. But for the best... I'd have to say right now I'm best with Snake. I (kinda) recently learned how to do Snakedashing (fun and effective if not spammed) and just started using him a lot.
CK's Wolf is extremely scary. Great Alex's is too. Wolf is just a scary character I guess.