I recently spent a few hours in a Qantas coach seat onboard on of their Airbus A380s. I came away amazed by the experience. The seat itself was comfortable and well padded. I can’t say enough about the importance of padding, something that many modern ‘slimline’ seats designed to squeeze half an inch of space per row and make it possible to add more seats to the plane compromise on.
I fly Southwest Airlines all the time. Southwest has a motto ‘we do short better’ and Southwest coach is great for up to 3 hours or so. I wouldn’t love to fly them to Hawaii, but I’ll gladly jump on their Washington National – Austin flight since they’re the only one that can legally fly it and it saves me a connection.