Horizon for location, routes, pay and equipment. Not for upgrade time at the moment.
Skywest for location, routes and seemingly stable growth and possibly one of the 'more' happy pilot groups. Not for the pay.

Those are my top two pics the others are all in the same ball park with similar equipment, QOL and Pay (not including smaller operators like Great Lakes etc). That's for ME anyways.

Cheers and blue side up...if that's your intention.