NCIX has been pricing more competitively since Newegg is here. NCIX had a pretty big monopoly before. They're both about equal right now. Only difference is NCIX has the board!
Are you really going to OC to like over 5GHz? Get a Gygabyte P45 UD3P, it rocks, and it's from Gygabyte! Still a very good overclocker, also, maybe even to 5GHz too!