They are interchangeable after a certain serial number on the Fs. There's some webpage out there that has every minute detail on this, so you can search on it. Personally I think the old school Nikon name plate looks the best with the F and the F plain prism is sharper which matches the body better.
Probably the best of both worlds would be the Nikon F Apollo variation which uses an F2 style advance lever. These aren't too hard to find either. That being said I believe it's just the lever. The throw and internals are the same as a standard F.
Stop worrying about grain, resolution, sharpness, and everything else that doesn't have a damn thing to do with substance.