I have used them 3 times in October 2017. I am 6' and the leg room was terrible. Had my knees pressed up against the seat in front of me the entire flight.
Ordered noodles which we had to pay extra for and the food wasn't great. They we stuck together like a mash and the vegetables weren't very fresh.
We had missed our flight from DMK to CNX and the fee change was the equivalent of buying a new ticket which was surprising.