I like Chris Byrd, not that he's a particularily entertaining fighter but he's a nice guy, but like VD said, his best days are behind him and as soon as his reflexes start to fade he's in some serious trouble. Wlad beat the hell out of him in their last fight.
I could see him having some success as a cruiser, but he's too small for a heavy and the only thing that has carried him in the division to this point are his reflexes and those are starting to fade.