Great article. You guys are head and shoulders above the rest of the reviewing community. Every detail is well thought out. However, in the interest of perfection, I have a few comments...
A graph of the best fans at 10 CFM would be a joke. IIRC, something like 9 of the fans would be clustered at <18 dBA@1m, which doesn't make for a usable graph. And, because the Scythe was measured at a higher ambient noise level, the fan that sounded second best would end up looking very bad. All in all, I felt that leaving the graph out would end up being more useful, since the true distinctions are in the subjective results, not the measurements.
It seems like all the fans are nearly inaudible at 10CFM and cannot be measured against the backgroud. This does not provide the reference to the reader that it was supposed to in the methodology article.
The constant airflow test is important: It gives a common point of comparison for every fan tested, making it easy to rank the fans based on their airflow to noise ratio. Whichever fan is quietest in the constant airflow test will be crowned the quietest fan overall. The extremely low level of airflow that was chosen for this test reflects our bias: Most fans will be very quiet at this level while still providing enough airflow to cool a moderately powerful system. Some fans, the best fans, are completely inaudible from one meter at this level. Others never quite disappear entirely but are still tolerable, while the worst fans exhibit a clearly audible noise signature.
Without any measureable differences at 10CFM, this test seems less than useful to compare noise unless the fans in this roundup are uniquely quiet compared to most fans you review. The subjective reviews point out the differences in noise quality, but perhaps a higher CFM like 15 would better identify the differences in noise vs airflow.
Also, I really don't care about a review of a product that I cannot buy. While a good review may prompt the sale of these fans, I think it might be better to stick to fans that are available on the retail market, or at least focus on these fans more than the rest. This might be more relavent to the readers. If everyone like to buy their fans at endpcnoise, newegg, or whatever, lets get some reviews of the fans they sell.