Opinions for 85 f/1.4
Its my fave lens, the only one in my bag that gives me a buzz. I have a 50mm 1.4 that is nowhere near as enjoyable for whatever reason, so its not simply its superbright image on the viewfinder.
I'd prefer the G for the reasons Ray states, but its still a great lens to use so long as you get the hand of it and nail the focus at max aperture. The dof is wafer thin and easy to miss.
The 1.8 will be very similar optically if you don't need f1.4. I know it sounds obvious, but there's no point in having a 1.4 if you don't shoot wider than f1.8.