Had both at one point and really didn't use either much for portraits (don't do a lot of portraits). I had a chance to sell the 56 and even though it was a beautiful lens and very sharp, I haven't missed it. The 60 is terrific but a bit slow focussing but with the later firmware updates, it is alright. The 56 is no speed demon in the focussing department either. I would look at what the primary use is - if closeups the 60, if portraits the 56.