The thing with the H60 is that it doesn't really hit any performance mark to justify the price. Let me run through a few scenarios when it comes to overclocking a i5 3570k for example, assuming reasonable voltage.
3570k at 4.2GHz (which is what I have)
Modest overclock, very common mark for average OCers. At this clock generally the CPU is not really going to get much hotter as a result. While the stock cooler might not be a good idea, a cheap, AND GREAT cooler would be this one: http://pcpartpicker.com/part/cooler-master-cpu-cooler-rr212e20pkr1.
Compared to the H60, it will most likely give you similar temperatures at half the price without overheating issues.
3570k at 4.6GHz
Great overclock, with enough tweaking I would guess that a decent number of 3570k can reach this clock speed, but it comes down to the chip itself and the voltage it needs to be stable. At this clock, unless you somehow was lucky enough to get one that can get to this with a low voltage the H60 might work. However to be honest once you reach this tier I would suggest going into the $80+ coolers like the H100i/Kraken X60/NH-D14/Silver Arrow Extreme range of coolers. The H60 is really not good enough to keep these OCed CPUs cool enough I fear.
3570K at >4.6GHz
I don't know what magic you did to get it to 4.7 or 4.8, but I can tell you for sure that the H60 will not be enough, again you want to look at the $80+ range for coolers.
Bottom line:
Personally I just feel that the H60 doesn't do anything useful. Compared to a good and cheap air cooler like the Hyper 212 it doesn't really perform any better with a lower overclock on the CPU and it will likely not be enough with with a higher overclock. Tiger if you are deadset on geting watercooling, maybe a H80? That's about the only single 120mm pre-build watercooler I could maybe see being useful? But even at that price it is not as good as the NH-D14s. I would say just save a bit of money and get a Hyper 212.