My experience with FoP is that the quality of the picture depends, not in order of significance, on (1) where you're sitting and (2) the glasses, many of which are worn out. Every once in a while I'll get a pristine pair of glasses and suddenly everything looks amazing.
But lately I've found that the glasses they give you are past their use-by date and some of the CMs passing out the glasses are holding them by the lenses, which adds smudges to the already-scratched-up, beat-up lenses.