I guess I'll have to agree with "get neither". I mean those are deffo not the only two choices.
If you want to sound like every other band out there get one of these amps. If you want to get a tone of your own... go to a local amp shop and try them out and buy the one that feels best suited for you.
Seriously f*** all the Peavey/Mesa hype. There are amps that are easily capable of the same level of br00tality. Marshall JVM410, Orange (sorry I'm biased here), Diezel, Uberschall... the list goes on and on. Seriously do some research and go try them out and we won't have to wait 3 months for your next "what amp should I buy now" thread.