Here are some inputs that may make the tests more useful than it is now.
Methodology:
1. Why are you using QX6850 as a testbed? Some coolers are never designed to cool a quad, even less so a top end one. The ones you've listed so far are only designed to cool dual cores.
2. Why oh why do coolers that require motherboard to be taken out of the case to mount back plating score so low on "ease of installation"? Push pin coolers have the tendency to pop off the motherboard. Especially modern coolers have fairly heavy weight, having a push pin mounting design will simply bend the motherboard over time, and slowly breaking them.
3. Why 1 min and half of stressing only? Why not 5 minutes? I understand if you guys are under time pressure here, but wouldn't it be far better for you to review more powerful, more enthusiast suggested cooler, and do a thorough review on them, than getting some less known heatsinks? I find doing a review for 80 heatsinks to be very redundant.
4. Why don't you guys mount the cooler inside the case for testing? Sure its a nuisance for installation and uninstallation, but wouldn't putting coolers in the case represent much more objective view? What about case airflows?
5. Some of the cooler have very weird, unconventional mounting direction. Why facing up? With the exception of few enthusiast cases, most cases do NOT feature top fans.
6. Why are you mixing water cooling with air cooling? Sure they all are CPU coolers, but mixing them will create confusion.
Heatsink Selection:
1. Where are the most recommended, most used coolers? Where is Artic Freezer Pro? Where is Thermaltake Big Typhoon? Where is Zalman 9500 / 9700? These are the most recommended coolers on almost every single enthusiast sites.
2. What about the newer ones that are capable of cooling up to 130W? Thermalright Ultra120? Scythe Ninja? Turniq Tower?