Anything but an RJ. That is sad to have to say but I live in a city where more then 70 percent of the flights are RJ's. I have flown on every type of commercial jet except the A380 and Concorde. I have flown 747,767,757,737,727,717,707,777, BAC-111, 707,A320,A300,A330,A310,720,F100, Carevelle,MD11,DC10,DC9,DC8.