We are about to set off on vacation (23 days time) and always look for flights with personal entertainment if possible. The first leg of our flight is not really important as it is a quick hop (30 mins) from Columbia SC (CAE) to Atlanta but the flight from Atlanta to Las Vegas is over 4 hours. I was able to get the individual systems both ways but as regular as clockwork Delta changes flight timings and aircraft! Our original flights out remain the same but the return flight is now 30 minutes earlier and with a different aircraft the entertainment is now communial. Of course Delta like most airlines, gives you the chance to change flights if you are not happy with the new timings. The trouble is, BOTH of the later, 11am and Noon flights are without any TV screens whatsoever? The flights are almost four hours and given the recent deluge of Delta's push to advertise the new and upgraded on board entertainment I cannot understand why they would schedule aircraft without any entertainment? Oh I am sure it will/they have radio and or wifi on board but that isn't quite the same is it, especially if you have purchased a first or business class ticket? The mind boggles? Keith.