I prefer Skywest, almost always with them I have had a great crew. Pilots are informative without being over talkative and the flight attendants 95% of the time are always smiling and seem happy with there job compared to the bitter ones I usually get on main line.

I'm on a skywest flight every Friday night from SJC to DEN and only thing I miss is channel 9. If they would get that I would fly them instead of mainline any day.