I've flown with them 70 maybe 80 times in the last two years--mostly commute trips from Seattle to Spokane and occasionally over to Montana. A few things about the Q400: This is not an old or aged aircraft. They are extremely fuel efficient compared to jet aircraft. They can cover shorter legs in approximately the same time as regional or larger jets. They tend to be a bit noisy on the inside particularly between rows 6 and 10 which are nearest the engines. Most of the examples in Horizon's fleet are less than five years old. I like the fact the Q400 can be boarded and deplaned from both front and rear making both processes faster than larger aircraft. I agree that this is not an airplane that you would probably want to spend more than about 90 minutes on at a time. I greatly prefer the Q400 to the Bombardier regional jets also flown by Horizon. Horizon's flight attendants are the best. Boarding in Seattle Spokane and Portland is frequently a bit trying. Delays on Horizon are just like any other carrier.