Originally Posted by
nystateofmind
If you are not a big person (widthwise) I would suggest the 76Q if you can snag Row 2 or 3. Though it is not by that much that I would spend more money/miles or take a less convenient flight for it. ATL-LAS I have seen them replace 75X with regular 757. Less chance they do that with a 76Q
Another good point about the 757s, they do often replace the 75X with the standard domestic 757 which has no AVOD and is definitely more cramped than either the 75X or 76Q as far as legroom goes - widthwise it might have them all beat though; I really don't know.
As to
N522US, I remember thinking exactly the opposite after flying on a 75X and 76Q consecutively. To each his own though.