Personally I love the fans that Corsair makes now. They aren't the quietest in the world, but they do their job extremely well, and have high static pressure, which is a very good thing for fans blowing through heatsinks.
I've got the Hyper 212+, with a single of those Corsair fans. My i5-3750K is at 4.4GHz, 1.18v, and doesn't ever break 60, even when gaming.
Very nice temps, any chance you could be more specific on which fans those are?