equal time between a
nikkor 85/1.8 and 105/2.5 on a F2AS or F4
and a
Minolta-M 90/4 on a ZM Zeiss r/f

all on b&w, of course.

Still haven't made up my mind which is my final choice.
Each has its own thing going:

the Minolta is ultra-sharp (careful!) and the r/f is just sooo portable,
the 105 is to die for in close crop face shots,
the 85 is just purrfect for half-body shots.

aw, stuff it: I'll just keep using them all!