I have a complete set of Nikon screens (22) for my F2 and a couple of Beattie screens. However, there are some that I prefer to others. When I was young with good eyesight, I preferred the “B” screen for general shooting. As my eyesight failed, I found it easier to accurately focus with the “A” screen. For astrophotography, I prefer the “M” screen. I use the other screens when the circumstances warrant. For example, if I am doing a lot of 35mm architectural work, I will use the grid lines on the “E” or “R” screens.

I have used the Nikon F, F2, F3, and F4. All are excellent cameras. I no longer own the F or F3 but I still own and use the F2 ad F4.