Thinking some more about the CPU block:
I have had a bad (well, very actually) experience with the plastic topped LRWW. It cracked and leaked onto my lovely 9700 non pro (voltmodded and running sweet) killing it
The reason I was leaning towards the LRWW and DD RBX were the brass / alu topped versions...
Has anyone else had plastic-topped blocks cracking?
My LRWW must have been the copper base bending ever so slightly, enough for the plastic to try to bend with it, and snap.