How many can honestly say that they have had parallax issues when shooting 500 yds or less?
Either I'm lucky or I just happen to get behind the scopes I own, but I've never felt it was a factor at the ranges I've shot at (500-600 max).
Mostly use Leupy, Ziess or Nikon scopes.
I only own one scope with a SF. I just haven't seen the need for them on hunting rifles used at 500 an under, which is my big game limit.
Just my experience, YMMV.