In terms of entertainment value alone, Katie H probably deserves to win. Nadia got on my nerves at first, but I've grown to quite like her and wouldn't be averse to her winning either.
Perez has been good value and again, I wouldn't be against him winning. Cheggars - not really as he's not been particularly memorable. Same goes for Kav and Calum.
Michelle and Cami have also been good value HMs. Katei Price - massive disappointment to date and a complete waste of time and money her ever going in there to be honest - a complete flop!
Anyway, still a way to go yet - my views might change on HMs.