I wasnt going to toss my two cents in but since no one else has responded I'll say what I have to say, contradictory though it might be.
Personally I'm an AMD fan. I believe in paying for the better price/performance ratio and AMD always wins in that category. Yes yes, the P4 is faster, there's no denying that, but in terms of getting what you pay for I'm firmly in favor of AMD equipment.
That said, in lieu of not knowing where youve looked already I'll recommend
Toms Hardware and
AnandTech. I've found all my hardware thanks to their in-depth reviews. Totally complete and only marginally biased.