i always get nervous with WC,  just due to the extravagance.

i do have a corsair H70, baby steps, but the big triple radiator kits look fierce enough to a) weigh more than the case b) seem to be just as noisy with 3 fans to cool 2x6970's as the air-cooling rigs. one day, i'd probably like to get something like the swiftech 320 edge kit, with the blocks to cool things. but it's nearly the cost of a 6970 for the WC kit and the extras. sigh.

in theory, if the regular ~50db gets annoying i might spend the money, but it would have to be amazing. and you'd also likely need a UPS that can handle 1kva minimum as well, just to make sure the heat load is not staying around