Go with one that has a future and is growing like Republic airlines. Airlines are either growing, stagnating or shrinking. Skywest isn´t unionized so they keep being hosed on their work rules, Eagle has a 10 year upgrade and XJet is trapped in a dying aircraft, the 50 seat RJ. Republic is growing. The only thing stopping them at the moment from buying more aircraft is most airlines have adequate capacity or too much capacity. Once they begin parking their older aircraft, they´ll begin looking for partners to pick up the market share. These partners will need to provide a modern, economical and reliable service. Republic fits the bill.