I've been using primes 20:1 over zooms.
That is about to change I think. I just bought a 70-200mm f/2.8, ordered a 24-70mmL today, and have a 16-35mmL and 100-400mmL. I'll sell my little used 70-200mm f/4 IS, and probably my 24-105mmL
This leaves me with a few primes, 15mm f/e, 17mm f/3.5 Tokina, 35mmL, 100mmL, and 135mmL. I sold my 85mm 1.8 and two 50mm 1.4's and a 50mm 1.8 MK I last week. I also have some older consumer zooms that I will sell, but they do not amount to much. A 22-55, 28-200, and 50-200 that I've had laying around. I also have three TC's.
I'm trying to reduce the number of lenses that I use, but I'm prone to buying more. I am concerned about the ability of the zooms to function well in low light, of 2704 images at a recent shoot, 1550 were greater apertures than f/2.8, and many of the others were shot by a person who had a smaller aperture lens.
what I can get aw
I typically use a pretty fast shutter because there is movement, but I'll find how slow I can go very soon.