Do yourself a favor and get the best. Swiftech MC462-A. Nothing else comes close, period. Yes, it is expensive, but you get what you pay for. Try to either get a pre-assembled unit with the Delta 68.5cfm fan, or get a bare unit and find a black label Delta to put on it. The Sanyo-Denki shipping with the Rev1 MC462-A's gives up a couple degrees.