There was actually a nice comparison done a few years ago. It is in Dutch but the photos speak for themselves:
"The 70mm vs 77mm vs 85mm shoot out"
After spending way to much to time looking at it, I came away thinking the FA77 might be a bit sharper but the FA85 produces a nicer OOF rendering.
I have the FA* 85mm and regarding the big hood: I just never use it and have found no adverse effects. Probably also because its not the type of lens I would be using in full sun. I am very fond of it and use it a lot on the K-1, on which the focal length suits me more than it did on aps-c.