Nothing wrong with good air coolers, but I have to disagree with the comments against the AIO Water Coolers
They:
1. Dont Leak; I've installed 8 of them, owned 3 in my life...never an issue. I even destroyed an old Corsair H60 to test "the connections" and I had to finally take a knife to the transfer tubes to get it to bleed.
2. Perform Great; they give wonderful temps (yes, good air coolers do too).
3. Look Awesome; I care about the look of my box, so to me and many others...this is just icing.
4. Space Savers; compared to their effective air counterparts...theyre much easier to set in cases without obstructing anything
4. They dump heat OUTSIDE of the case; this is their biggest advantage over air coolers...which throw all that heat back into your case, which unfortunately adds to higher [everything] temps.
I love the Corsair line personally:
http://www.amazon.com/Corsair-Hydro-Performance-Liquid-Cooler/dp/B00A0HZMGA/ref=sr_1_1?ie=UTF8&qid=1431721688&sr=8-1&keywords=corsair+h60