They obviously must have tested this block before manufacturing it, and it is considered the better block they carry, but for some reason blocks with more surface area always seem to perform better as long as they are mated with an appropriate pump.
For example the BE jagged edge and the Danger Den Mazes. However I haven't seen any test of the V-tuned blocks and I'd be interested, hopefully there in the review!
Probably will be as ProCooling has sponsor decals for
www.overclock-watercool.com!
I wonder if they might perform better for people who don't own the 350gph+ pumps?