Took a recent r/t flight from FLL to JFK.

Going north, I was on one of the first Song planes with the Direct TV A/V system. Flight was 50% vacant, so there was room to move. I also was in the exit row. Flight was on-time and service was great. The 2.5 hour flight flew (no pun intended) by since I occupied my time by competing with other folks on the flight via interactive music trivia contained in the A/V system. Overall, very positive experience.

Heading south, flight completely full, leaving 1.5 hours late, not as friendly crew, no A/V equipment, ran out of some food items. Overall, very negative experience.

Point here is that no matter how you dress up the plane or whatever you call it, what makes passengers happy (other than getting there in one piece and on-time) is (1) room to move, (2) decent food, and (3) A/V entertainment system to occupy time at a "reasonable" price.

Any airline that can come up with this winning combination at reasonable prices is a sure winner.