We only fly Delta. Hubby is a 2 million + miler on Delta so when we buy tickets it helps him keep his Diamond status every year. Plus our little airport up here - Delta is the only airline flying the 2 daily flights out of here. I love it when we're on the runway for takeoff and the pilot says "well it looks like we're #1 for takeoff" Ha ha!
But seriously, We've had no issues flying Delta into STT over the years. For us it's Pellston to Detroit to Atlanta to STT.