Here's another vote for the Nikon 85mm f1.8G.
+ Great IQ
+ Not too big for what it is
+ good price
- all plastic
- AF can be slow
I must say, and I may be in the minority here, but I find the more telephoto you get, the less critical DoF control becomes. Even with cameras with small(er) sensor, you get easy subject separation with a lowly kit telephoto zoom. For that reason, the 85mm f1.8G is my least used FF lens and I don't own or lust after anything longer in FF. I still like the IQ, of course, but to get extra reach, it's easier and lighter to just go for something sub-FF. I think I shoot 50% of the time with just M Zuiko 75mm f1.8 (2x crop factor of course).