I have 2 F601, F100 and a F6. Most of my "manual" life has been spent in the OM world (no regrets). However I have 2 pre AI lenses I would like to throw on a body, once in a while. What would you suggest? I looked on flea bay the other day and dropped my mouth what people were trying to get for a FM3. I don't really know the manual line, which doesn't help.