I liked mentalbob's 60mm fan mount to eliminate the noisy 40mm fan (they are noisy moving air and + the bearing went out at the 3 month mark). The only issue I saw with the original is that I would have prefered more fan coverage on the board. I remixed this as a result; it holds dual 60mm fans and should cover most of the board.
I ended up buying a set of 4 6010 fans off Amazon for cheaper than a single fan locally so I am waiting for them to come in for a test fit.
I've also remixed a 120mm fan mount.