In general I don't agree with closed loop coolers. In my opinion they are "fake" water-cooling. I bought this H60 because it was $17 and I figured even if I hate it, its worth a try.
I will be going air cooling as I feel is superior is pretty much all ways to AIO coolers. But, this summer, I plan to build a custom loop.
I might just keep the H60 until then to save money, actually. I definitely plan to move away from AIO coolers though.