Bryan
I actually just found out yesterday that the MoBo manufactures have recalled the boards because of a P67 chipset problem. So, right now don't buy anything until they get it sorted out. It would suck to get a system and get it set up to your liking and have to turn around and have to do it all over again with a new MoBo.
Either one of those CPU's would be fine. I don't overclock either. It's to hard on your hardware in my opinion.