[H]ardOCP has reviewed a bunch of water cooling blocks :
One thing is for sure, any one of these 5 blocks listed should meet any of the expectations you may have. I guess it’s time to figure out which one of these blocks fits your personal needs best. If pressed, I would have to say the Silverprop Cyclone 5 would be at the top of my list and deserves the [H]ardOCP Top Pick Award, but being they are so close in performance makes it very hard to single one out.
Not that we have ever done this before, but we feel all five blocks should share the Top Pick award as all five units are superior water blocks and worth your hard earned green and consideration. Congratulations to Danger Den, Gemini Cool, Overclockers Hideout, Silverprop, and Swiftech.