I've used AMD since I upgraded from my old Intel 486 DX2 66.
Never had any problems w/stability. In the early days, there was a trade-off on performance vs. price, but
I have always been a bargain shopper.
Now, there is no trade-off w/AMD. Their performance is on par, or better, with the Intel cpu's - for a fraction
of the price.
Unless that radically changes, It's a no brainer - AMD.