I have decided to go to water cooling. I want to cool my CPU (Pheomon II X4 BE) and both of my graphics cards (XFX Radeon HD 6870) using the Zalman Z9 Plus case. I looked at a lot of prebuilt things like the Corsair H100 and H80 for my CPU and the arctic cooling accelero hybrid fluid dynamic vga cooler for my gpu, but they just stack up to too much. I was wondering if I could make a loop for about $300 ($400 max but the closer to 300 the better.) Kits are fine, I just want colored tubing.
And I agree with Mlc, what your after will cost a bit more than $300 if you want to do it properly. I also question whether its even worth water-cooling those graphics cards. No point adding $50 blocks to them when they are already outdated.