i guess intel was the better one, but still it's a matter of cost. so AMD is a lot cheeper and with the new 64, AMD is leading with a new structure. like i read on tests microsoft is also responding to it's technical structure and they will support 64Bit from AMD.
after some calculations i did INTEL systems are cheaper than AMD in case of needet cooling systems (like I use 7 fans to cool down without CPU cooler). finally with the 64 AMD they got on 1st place. i still preferre AMD's, and i still have no prob with coolers. getting a watercooled CPU this month should solve that problem like the system i made for my friend who has a CPU temperature around 30°C.
cooling down is the best way to make speed, so i still re- arrange and replace coolers to get best results. the original watercooled here in europe cools down do 42°C and the one i did works with 27°C or at highest 30°C just because changing and replacing fan's positions and rpm.
for the common people AMD is the best, if your pocket has money left go for the INTEL ... if you wanna waste your money
ciao, charly