Pros: - With magnetic levitation, these fans literally cannot create any friction with a motor, so they are TRULY quiet - I came from the stock fans on Corsair's own H115i, and those fans, even at 1000rpm, would start to make a high pitched rattling sound, which really annoyed me - When I got these fans, the noise I had before was completely gone - These fans can get loud at 1200 rpm+, but it's not a high pitched loud noise--- it's a low drone of loudness, kind of like when you're on a plane. So really, it's not the loud that is expected from a fan, it's just the drone of the air passing through - Great fin width, so I use these for static pressure for the 280mm radiator, and I actually noticed about a 5-degree drop at load on my 6700K at 4.5 GHz - The entire fan is surprisingly heavy, which is evident of great build quality - The rubber dampening pads on the corners also scream great build quality, but they are not going to reduce more noise because the fans inherently make little noise

Cons: - Expensive, but seriously the best fans out there - Cable is not braided, and a little short, not a big deal but I've seen other fans (EK Vardar) that cost less and come with a braided cable

Overall Review: Extremely quiet, great static pressure for radiators and the blackout color stays neutral and looks great in my build