Delta has great interiors, most of the time. I DO, however, remember flying in a Delta L1011 to San Juan, Puerot Rico from Cincinnati, Ohio, and the interior was a horrible yellow and brown. This plane was old and also rather scary as the ceiling tiles were rattling off on rollout! I have been impressed with every other Delta aircraft, though. The MD-11's I went on were great, and they this big mirror picture on the wall with ingraved stuff that was neat. I was in coach; business class looked like luxury! I didn't even see 1st class, but I'm sure it was REALLY nice! The MD-88's, etc. also have nice blue fabric and leather.