Miguel Quinones is a travel blogger who points to verifiable statistical evidence to show that low-cost Spirit Airlines is terrible.
A bunch of commenters, many of whom have flown Spirit, disagree.
http://pointmetotheplane.boardingarea.com/2016/02/19/spirit-is-truly-a-horrible-airline/
Who are you going to believe?
In my particular case, I have long legs and am confident that I would not be a happy camper in one of their closely-packed 28-inch-pitch seats. In a “Big Front Seat” I think I could be happy…I’ll have to try it one day.