You can get Gentle Typhoons in 92mm as well as 120mm.
I own many fans. The front and bottom of my case are limited to 120mm fans (I use 140mm where I can). In the 120mm positions I use only Gentle Typhoons. In my daughter's rig the front 120mm fan is a GT.
GT's come 800 rpm (AP-12), 1150 rpm (AP-13), 1400 rpm (AP-14) and 1850 rpm (AP-15). You can even find a 500 rpm AP-11 around in a few places, but it's only for very special uses -- like blowing air over a passive graphics card.
Other fans to consider are the 800 rpm and 1200 rpm Slip Stream fans, especially the 800 rpm. They blow more air than the GT's; and you won't need the higher static pressure of the GT's. Three caveats on SS's: they are sleeve bearing fans, so you must lube them before installing them (see my sig), and because they are sleeve bearing fans they should not point their output up; and the higher speed SS's (1600 and 1900 rpm) make lots of noise.
Noctua makes fine fans, but their cost is higher and they bring no benefit over the ones I've listed. If they did, I'd be using them.