I took Song this past Sunday from TPA to JFK. The seats are comfortable but a little narrow. The PTV's are great, especially the flight tracker. The flight had to go around weather and we went about 600 miles out of our way to bypass weather over the Carolinas. The flight tracker did help to see where the pilot was going. The passengers seemed to be impressed with the PTV's. The food is pretty good. I had a beer $4.00 and a cheese/cracker platter $4.00. It was good. The F/A gave great service. The flight was full.
I had a good experience with Song. I hope Delta uses Song as their future domestic model.
Also Tampa had some good plane action. I saw TED A320, Air Tran 737-700, Delta CR7's looked awesome. Air Canada A319 look Stubby. TPA is a nice airport.