I got to fly on a phase 2 bird earlier this week on my way down to FLL, and Southwest for the first time since 2006 on the way back to BOS.
Jetblue Phase 2 (N766JB): I really enjoyed a lot of the updates, however I take issue with the amount of padding in the seat cushion. I unfortunately found it to be uncomfortable after just 1.5hrs in to the short 2:40 min flight to FLL. I really enjoyed that they include you plane name and tail design on the IFE, however on our flight it was displaying the previous destination and flight info. Also throughout the majority of our flight there wasn't enough signal for the LiveTV or Wifi. However the wifi worked more of the time then the LiveTV worked. Moodlights: All I can say is that I wish all airlines had mood lights on their flights.
Southwest: I can't believe I am gonna say this because I am such B6 fan, but I found the seats on our 737-700 to be quite a bit more comfortable than the new phase 2 seats on Jetblue. Otherwise Jetblue beats southwest on all other aspects of the cabin.
(A359,A343/A346,A332,A319/320/321,A220-100)(B788,B772,B762,B752,B744/B748,B732/B737/B738,B717)(E190,E145)(CRJ100/200, Dash 8-200)(MD-83)