Just checked back here, and re-examined the OP's links to the NewEgg Intel and AMD offerings.
There is such a thing called "the bandwagon effect" in market demand, but people are attracted to a commodity for a reason. Sometimes, the reason is frivolous; other times -- not.
The linked Intel processor has some 2,200+ reviews, and I thought I saw just over a hundred for the AMD processor.
I have friends who wanted to upgrade their old computers to new dual cores. One of them had taught programming at the high-school level, and jumped on a Dell with an E6300 Intel. The other one -- a very bright person whose help I'd seek if I did something wrong and needed a lawyer -- doesn't know much about computers, and got an AMD system at a bargain price.
Even Maximum PC Magazine, which was pushing the AMD line two or three years ago, gives a limp assessment of Phenom while comparing it to the QX9650.
This could all change. But I'm pretty happy with my Q6600; almost got giddy at the performance of an over-clocked E8400; and -- I couldn't help myself -- I decided to get the E8600 with a replacement mobo.
I should start selling my spare parts, but there's the fam-damn-ily to consider, and I depend too much on this technology.