With out further ado...
So your only real question was target at flare resistant.
All of these posted portraits are top notch! Where the back ground really adds to the image Beautiful and lovely! I'm a big fan of environmental portraits Especially seeing your work.
Yes, mostly. Flare resistance and I didn't mention it but character is important as well.
The 50/1.4 AFD is a fine lens though it flares and has a tendency for CA that I could live with out. I let a friend borrow it and they turned the focus ring with out switching the manual focus switch on the camera and it must have stripped the focus helicoid of the lens. Sometimes it has trouble with auto focus in the near range now. There is a scratch on the front element and the filter threads are damaged. Its old & beat up and I'm still happy with it for the most part, but also interested in alternatives when the time comes to replace it.
I love the character of the 35/1.4 AIS wide open and up close, it sometimes looses its charm when the aberration induced soft focus effects appear at medium and further focus distances, unless stopped down of course.