I hate corporations as a baseline.

That being said, Spirit was cheap and acceptable to me. The customer service was the same I experienced in the "nicer" airlines because they only start caring about you when you aren't the low class tickets. Sometimes it was a little entertaining because it felt like "NYC Subway in the sky" in regards to weirdos taking the flights, but nobody cared or judged, maybe I was one of them. You were there because you had to be, and they got you where you needed to go. They were the only airline I used to send my son back and forth to his mom's for vacations, and it was always straight-forward and simple.

Also the Black on Yellow color scheme is nice.