Originally Posted by
sfozrhfco
If a lounge is important, there is nothing stopping you from using the lounge in T4 and then heading back to T5 for the flight. I have done it many times. Other than the lounge I would take T-5 over T-4 any day.
While I certainly agree that T5 is nicer than T4 as a terminal in itself, going back and forth between the two is a hassle that most people will choose to avoid, myself included. It's just not worth having to clear security twice and take the AirTrain and walk the sky bridge (or take the outdoor path between the terminals). That's all extra time I could be spending in the lounge or at home/elsewhere.
-J.