I've flown Comair's several times from Manchester, N.H., to Delta's Cincinnati hub. They make that connection practical--it would be absurd in a turboprop. Versus "real" jets, seats are smaller and don't recline as far. Overhead bins are small, but Comair lets you hand over bags as you board and pick them up when you walk off so you can still avoid baggage claim delays. And, of course, there's no front cabin. All in all, they're OK for this 90-minute flight but wouldn't want to be in one much longer.