No experience with first class. But I have flown the LAX-MCO many times (usually at least twice a year). Typically in Economy, but a few times in Comfort+. I have tried all the various airlines and Delta has been the best by a large margin. Every flight has had seatback entertainment with many options of shows to watch or live tv. And the WIFI has been great on both my phone or IPad. Delta has become my top choice for the route. I have had both UA and AA that did not have the screens for the long flight and sometimes my IPad did not want to cooperate with their systems.