Plz realize that NZXT cases have (relatively) non standard fan mounts. If you want extra fans, you have to buy them from NZXT for them to fit. Concur with Deemo and Manofchalk on the DDR.
Never heard that before, glad to have learned instead of being bitten.
I like their cases but if I can't pick any fan I want then I'd have issues with NZXT.