I used the Maze2 in <A HREF="http://www.calvsplace.cwc.net" target="_new">My watercooling project</A> and it works very well, I chose that one because of the fact that it bolts to the board, so it can be tightened down very evenly and there is very little chance of the block tilting and taking a chunk out of the core.
Next time you wave - use all your fingers