H20 120:
http://www.swiftnets.com/products/H20-120-1.asp
The reserator is very quiet, but from what i've seen its not much better cooling wise than quality air (CNPS7000, SLK, etc)
Remember that the FX-53 is not a particularly great overclocker and is already at the top of the range, getting 200mhz out of it may not be easy.