the OP obviously knows what he is doing to a certain degree, is he not allowed to have an opinion on how to spend his own money? why flame on apkalipse? that serves no useful purpose...except to incite another AMD/intel argument...yawn.
now, for instance, i agree with gurusan that if you do go amd, buying an am2+ mobo would perhaps be a good choice, as (hopefully) AMD will solve their issues with the phenom and you will have a mobo that takes advantage of the newer technology.
if you are going to go the am2 route, you should consider sticking to the low end chips/boards and overclock the snot out of them. or get the am2+ board and a cheap chip.
any chip costing that much (as much as the FX or the 5000) will be pretty easily overpowered by a c2d in the same price range.