Who can tell me what the differences are in the two? I think the 600 series is more updated with the TV sets in all of the seatbacks in economy. I'm booked on a 300 series, so I think I might miss out on the fun in-seat entertainment.

Additionally, how is it that a flight on a 600 series from JFK-MAD is listed at 5 hrs, 10 minutes, but the exact same route leaving 3 hours later on a 300 series is 6 hrs, 15 minutes? That seems weird to me.

This is merely curiousity, and my desire to figure out what I am going to do with myself on the flight with no entertainment

Thanks for your help. Flyertalk is the best!

-KHC