Thinking of Going to water

Hey, i am thinking about water cooling, i was just wondering what would be good stuff for the money, i know the most expensive stuff isnt always the best so i want to get the most reliable and best rated amungst people. i have seen the koolance add on radiators that go onto the top of the case but i dont like that because i just got a kingwin kt-424 and i love the clean undisturbed look so i was thinking of a radiator that can mount to the rear exhaust port, anyone have any ideas? thanks in advance!

thanks pointed me into the right direction.