I can see none fit your requirements. I suggest you keep using the Nikon F2. Your favorite camera the 4x5 and the RB67 have none of the features you are asking for and you don't seem to bother. To me the F2 would work just fine as a 35mm SLR. If it's difficult for you to set aperture/shutter speed and it doesn't provide exposure scale nor spot metering I suggest that you don't use those features. Simply meter with the METER you used for your 4x5, set the exposure before even put the camera at eye level to compose and focus.