A64 or P4 Converter Kit for White Water Block

Anyone using either? And do they work well? the reason I ask is because I have a white water block, but I am torn on which way I am going to go whether it be a64 or p4

Link for A64 and P4 Convertors

bump

Yes, I use the A64 adaptor for my chip. It works very well. You just remove the 4 screws holding the top down, put the metal plate on top of the existing top. Then use the longer screws and screw the top back on. Very simple, and only takes 5 minutes at most.