I use the 65mm the most on my rb. I usually carry that lens and a 127 unless I am shooting portraits in which case i use the 150SF. Note that lens has marginal performance when not using it in SF mode. The 127 on the other hand is exceptionally sharp and I always use it in favor of the 90 (a focal length I am not comfortable with).
Good luck. Get a chimney viewer, the 65mm, a pistol grip handle, and go shooting handheld.
tim in san jose
Ok, so from your post i think i may go with 2 lenses instead of one, 65mm and 127mm.