It's funny that this is one of my least used lenses generally, as I tend to use my 50L and 85L for portraits here. but when I travel to street portrait friendly places this would be about my most used lens as I get get the extra reach so as to not intrude in personal space. also the super fast AF is is a little more handy than the 85L's.
I'll say I have a lot of mis focus human errors with this lens but no more then with any other lens.
I think it's still good value at 1300Au