Any HSF that is less than 80mm wide should fit. I built one for a friend this weekend using a Volcano 6cu (yea, not the greatest but I needed something quiet for him and he's not overclocking) and it *barely fit. This HSF is 80mm wide. Once side of it hits flush against one of the chipset HSF mounting pins but it does fit.
Beyond that, which one you go with is up to you depending on what your priorities are - more cooling, loud fan; less cooling, quieter fan, etc.