Why spend money on aftermarket cooling at all if you are leaving the processor at stock speed?
A Hyper 212 comes close to cooling as well as the closed water loop coolers you listed. Most of the really good air coolers are better than the H70 at least, I am not real familiar with the H100.
I have a Scythe Mugen 2 that was only $40 and comes within a degree or two of any of the high end coolers. It has since been replaced with the Scythe Mugen 3 but I am sure that it is as good or better than the Mugen 2. Also it is nearly silent.
Here is a good article comparing coolers with the Scythe beating the Hyper 212 by 6 C.http://www.tomshardware.com/reviews/lga-1156-heatsink,2535.html