I built my latest system around Intel because AMD didn’t have a quad-core at the time. Prior to that I had an AMD because they were the first with dual-cores. I also selected an Intel motherboard this time and what I experienced is the greatest stability I have ever had in years.
So for me, the downside of AMD is that you are dependent on some other motherboard manufacturer to “get it right” and they rarely do. I’ve bought the top-of-line GigaByte, I’ve bought the top-of-the-line ASUS, and there was always some instability. The users manuals are written in broken Chinese-English and their customer support is non-existent.
With Intel, I pick up the phone and a human answers and we talk tech and my problem gets solved. I had to do this with my latest motherboard and it was like a breath of fresh-air. There is just no comparison. I build all my own machines so support from the manufacturer is really important to me. Somehow an Intel CPU with an Intel motherboard just works like it should. But in the end, it is personal preference.
~jr
http://www.johnrofrano.com
http://www.vasst.com