A good, cheap solution would be to replace the stock with a Noctua NF-F12. I was unhappy with the noise of my Corsair H60, but swapping out the fan for an NF-F12 made it dead silent.
I'd recommend looking at an AIO, they're normally quieter and perform better. Plus they have small CPU blocks that won't have any issue fitting on around annoying blocks on the mobo
