Quality of both companies is on par i think. I've had outstanding AMD computers, and great Intel computers. My old P3 still worked after years of use, and this AMD i'm on now will probably be the same. Never had any processor just "die" on me for no reason.
For what I do, I like AMD. I game alot, and I don't have alot of money. Back when Socket-A was new AMD was the best bang for your buck, and Intel was for the richer kids. I still think that's true today, but on a larger scale.