I've been more than happy with my MLs, and they're still going strong several years on. One thing to keep in mind is to not get too hung up on max RPM of the fans you're choosing... any of the fans I've played with recently start getting stupidly loud once you start pushing them into the higher RPMs. My MLs will push 2400 RPM but seriously, anything above 15-1600 RPM is just obnoxiously loud without much in the way of better cooling performance.