Miz is the best of the current bunch of younger/newer guys, them after him it'd be Ziggler, Barrett, Del Rio and Cody in terms of overall ability/potential.
Sheamus - Can't decide on him, just isn't clicking yet for me.
Danielson - Great ability, obviously experienced, needs to develop a personality, as this ladies man thing will only go so far.
Swagger - Can't get past his lisp, no charisma, but no doubt a good athlete.
Morrison - Amazing athletic ability, just can't cut a promo at all. He can't do serious, maybe needs to be more silent, maybe get him a manager.
DiBiase - Really disappointed that he's not done anything yet, as a year ago I thought he was going places.
McIntyre - Does nothing for me at all. Character doesn't quite work, and he needs to cut his hair.
Kofi - Some charisma, but only with the kids it seems. Doesn't connect with me in any way. Needs to stop doing the same bouncy moves, I get it, you can jump high. Try jumping off something high.
DH Smith - Absolutely nothing, looks clumsy in the ring.