You may be a little high, but probably not bad.
I have the 3770K with the H80 in exhaust mode and get at x35 high 20s in idle and about 46C at P95 load. But the orig H80 bracket hdwe allowed a gap for my ASRock Z77 Extreme4, so there would have been no way to secure the cooling block on the CPU. I contacted Corsair Tech Suppt twice but they would not acknowledge the problem; I added nylon washers to the backside and it solved the problem.
I have not yet OCd, but expect (or hope) for under 60C at x42. I do plan on remounting the cooling block with Antec Formula 7 (8.3 w/mk, nearly comparable to some aerospace solutions I've seen) and if need be, reverse the H80 fans to intake (may also change a front mounted 120mm from intake to exhaust). I expect the first to improve performance at least 5C, and the second maybe 1 or 2C. BTW, my ambient is about 25-27C.
As others have said the H80 fans when at the high speed are noisy (and sound like jet engines at awake!), but are fairly quiet at low. Corsair told me the pump (which is always on high, about 2100 RPM...you cannot adjust this) is rated at 50,000 hrs (not bad). For noise, during normal mode, I'm thinking of plugging these into the m/b headers so I can control for normal ("quiet") mode, and can let them rip when I need to OC.