We flew spirit down in 8/2001. The planes are old, very old. They bought them from the old Eastern Airlines. We sat in an emergency exit row on the way back, and it wasn't sealed completely, and I could see the insulation.
The way down the flight was ok, but since it is a smaller airline, it shares a gate with another small airline, so we waited to gate over 1 hour in FL and 35 minutes in Newark. It was a cheap flight, but never again.
Dana