Need help with CPU cooler

I have a i7-930 processor and I am having a hard time trying to figure out which cooler to get for my CPU.

I was looking into either a heatsink or a water cooler.

I plan to game with an Eyefintiy system, once I save up for the monitors ;-)
I've never overclocked, but I want to try it.

I didn't know if I should get something terribly...very confused on what to get.

So far I looked into these, but like to hear suggestions or opinions:

Coolermaster Hyper 212 Plus

or something like this:

CORSAIR Cooling Hydro Series CWCH50

Please any suggestions or help would be greatly appreciated.

Thanks!