Hi Shadow,
thanks for the reply, judging by what your already running your already pretty knowledgable about hardware and so on, so my next question is... Do you want to stick with AMD or go over to Intel? As your probably aware Intel currently are making the best mid to high end chips but as AMD are promising to release their 45nm solutions in the latter part of 08 it may be better to wait. (I along with others are waiting for this to happen).
Intel are just about releasing their 45nm chips now and although they've been hit with low chip numbers apparently the word is that they've solved this:
45nm Quad cores coming next week! - VR-Zone IT & Lifestyle Forum!
So the choice is yours really..Wait until later in the year and see what what AMD 45nm solutions are like (which according to reports very good) OR go with a 45nm Intel solution now. Just to add, personally I'd give the 65nm Phenoms a miss, unless you can get one which is around 3GHz (which you won't see until later in the year if ever). They really aren't that much faster than the Dual-core Athlons and with the 45nm chips so close to release I'd wait..