Skimming the thread and I did not see anyone mention
FrostyTech or their
top-5 list, so I will.
They rank by temperature and noise, it is up to you to rank by price/performance. But they test all their HSF's on a common testbed (scientific method FTW), so you the data behind the performance rankings are on solid footing and comparable to data generated on HSF's from years ago on the same testbed with the same testing methodology.
(you can click the HSF's in the top5 list and see how they tested in comparison to the other HSF's)
As you can see in
this table, all the top-ranked HSF's perform close to one another in terms of cooling, but noise varies widely as does price depending on where you live.