Sweet, hopefully I can get my hands on the LTT editions :3 From what I've seen here in Aussie-land they're actually cheaper to get from PLE than regular NF-F12's from pccasegear, which is interesting... So I shouldn't have any issues with them on the rad, that's good news.
They're rated to about half the CFM that the stock ones are, not that I really believe the stock ratings.
But being rated to ~100CFM when basically no other fans, let alone 120mm, are rated that high seems fishy.