1| welcome to the forums newcomer!
2| for that price a liquid cooler? its just a cooler that has its heat taken closer to the exterior of the case.
3| would invest in a CoolerMaster Hyper 212 + or EVO and save me that bundle of cash needed for a corsair/antec/thermalcrap closed loop/all-in-one cooler.
4| still want to brag about watercooling? then my advice would be to go on a custom kit and for that my friend we'd need to know the specs of your case innards to advise on a cooler in the first place. However, the Hyper is a great air cooler, and cheap too.