I took them for one flight, SVQ-PMI. No problems at all, and my airline had an ezed agreement with them. I believe this was only my second time flying ZED (first being MAD-SVQ a few days earlier on I and it was fine. Since we don't really have much for AB people around here, I called their reservations line. They didn't give specific numbers, but they were at least willing to tell me if a flight was worth trying for or not.