i had a vortex equivalent sight on my gun last year. loved it.
new gun this year, decided to get the burris FF III to top it off. had hell getting the thing sighted in. the adjustments are just vague suggestions as to what the dot will do.
if i buy a third red dot sight, it will be a vortex.
this is just one sight and does not necessarily represent the FF III as a whole, but i don't see me buying one again.