Power Metal is basically the same thing as glam metal but in the now. I can only think of a few power metal bands that don't sound like a glam hairmetal band VH-1 picks on.
It may only be half power with the other half being thrash, but it's still power metal. Besides, Thrash and Power are my two favorite sub-genres anyway.
Maybe I'm just too old school but I don't like all this generalization of "Metal" bands. Look, you listen to it.......it either sucks or it rocks your fucking socks off, that's all there is to it.