Keep in mind that many suggestions you read on various forums, most users have experience with only one type and brand of fan. That is why everywhere you go on the web you generally see the same few fans being suggested over and over. Generally there's only 1 or 2 people who are really experienced in their field while others seem to be more subjective and brand oriented.
Noctua tend to inflate their airflow and static pressure specs because many users who actually tried different fans vs Noctua (within the same rpm range) report Noctua having less static pressure than Scythe GT, GELID and other fans in it's class. I came to the same conclusion myself.
There is a range of Scythe GT fans (with AP-15 being the most common here), depending which rpm version you're going for but Scythe GTs tend to have a little motor noise due to it's ball bearing design.
As for Noiseblocker you may want to give them a try and see how you like them because Noiseblocker updated the bearings since their release of their NB-eLoop series and have since updated their entire line to that new bearing.
I have only tried Noiseblocker's 140mm BlackSilentPro PK-3 (pre-bearing update) but returned it and kept the GELID Wing 14 because it was quieter and pushed more air at the same rpm (1200rpm).
If you have the time and cash to throw around, I'd suggest you buy a few fans from different companies and compare them yourself. Keep the one(s) you like and return the rest. That's what I did before I settled with GELID (played with fans from 6 different companies and bearing types).