Until now I have been using only AMD cpu's just because they were way cheaper from the Intel's.I have an AMD 64 3500 and I am looking for an upgrade.I have already checked the buyer's guide and I found some very useful info but I still havent decided.In my price range,my choices are the AMD ATHLON 64-X2 4600+ 2.40GHZ and the INTEL CORE 2 DUO E6400 2.13 GHZ LGA775 1066 FSB.I see that many people here talk about the Intel's,no one talks about AMD's.What would you suggest?