Good service, convenient, less arrogant.
The Q400 is a high wing plane. All these plane are more stable by design and less sensitive to turbulence. The cabin is hanging below the wings instead of tip-toeing on top of it. That result in a plane less sensitive to side-to-side rocking motion.
Being a turboprop makes it noisy but not unbearable. Nothing a good $40 set of in-the-ear headphone and an MP3 player can't take care of, even at low volume. If the flight is longer than 1.5 hour, I use my Bose noise-canceling headphone since they do a better job at blocking the low frequency buzzing sound.
Even without headphones, you can still carry a conversation with your neighbor without yelling, no worries with that, it's not a rock concert.