whew, I was going to stop in here just for a little bumpage but yowzers this was quite the thread after I went to bed haha
I would have to agree with trt about cost/performance as with the dirt cheap price on the 6000+ it's almost too much to pass up...of course it's exciting to get new parts and a new system and what not but it really would be a waste. Even with your 3600 running at 2.8 or thereabouts you'll notice a huge gain with the 6000 even at stock speeds, let alone after you OC it.
Let it be known that I only slightly favor AMD though I have an intel setup because of the amazing deal I was able to get on it, so don't flame me! haha
oh and bump for you