I’ve been using mostly Intel for my last couple of machines and prefer it. That said, AMD is not bad at all, I use the very cheap 8 core AMD FX-8320 for one of my servers and it handles virtualization of 18 windows 7 without a single problem, and it’s not using 100%, which is very, very respectable for a CPU that cost like $130.
I’m using an Intel 4930k for game development and it works perfectly but you can get great performance with something way cheaper, from both brands.
But if you have a big budget for a CPU, I would not suggest AMD, then you might as well get a powerful Intel CPU, AMD is not competing in the high end market very well.