Thanks everyone; that is very helpful.

But I have to say, in response to post #7, that saying we are "spoiled" is pretty strange. My husband and I are seniors, and the decibel level and tone of the prop engines on the Horizon Q400 are sufficient to cause physical discomfort if we sit anywhere near the engine. So we sit way in the back, and are grateful for the short trip. I otherwise like the Q400 and Horizon in general.