There is really only one good choice out there right now, Skywest.

If you go with GJ or TSA you will not be happy but of the two TSA is the better choice.

Envoy in Chicago but the company does not mind making hugh changes if it thinks it will save them money. It they can make a few dollars they will close it down like Delta did to Comair. They might form another airline like NW did with Compass and then sell it off so that they can use it as another bidder to keep costs of pilots down.