I kind of "beg to differ" … I perfectly understand that premium silent fans are not top priority for manufacturers, but for some end users it certainly is, like myself. On the other hand, extremely cheap, inefficient and noisy as hell fans are all too normal to find - hence my question.
That is exactly why I went ahead and bought SilenX fans for my GN Ms0006's - I am an apartment grower, and having noisless setup for cheap night-time electricity is a must. I did got through very thorough CFM analysis prior to it of course, cost me an arm, but 100% worth it and in terms of electrical savings it payed for itself within a few months.
It certainly is possible to have a whisper silent light. Though it will cost significantly. Aren't Spectrum King lights completely fanless even ?