I am seriously concidering the purchase of a Rolleiflex but welcome some advice. I have been using a friends 3.5F Planar, from reading other threads it looks like the consensus is that the Planar lens is the one to go for. There appears to be some differences of opinion on the merits of 2.8 v 3.5. My question is: Given cameras of the same quality, what would be the 'best buy' 2.8F or 3.5F, and which model (are some models/years better than others). I have read that the older models with coupled shutter/exposure are not as valuable as the later model without this? Basically if 'you' could select your 'ideal' rolleiflex which would it be. I know this is very subjective, but really welcome your opinions and help.