Check this link: :mrgreen:
http://www.xbitlabs.com/articles/coo...n-roundup.html
Usually fan reviews are not very good because there are not enough fans to compare, but this article really did a good job to detail the performance and noise of each fan. In the end, the editor picked FM123 as his favorite because it was the most flexible (can be very quiet and very powerful) and has the best fan controller.
In fact, all three of our fans (FM121, FM122, FM123) did very well against the competitions. :mrgreen: