We flew on Lufthansa on the Transatlantic flight from Philadelphia to Frankfurt followed by our return 8 days later. Our plane was brand new, unfortunately the seats were brand new too. I guess they used the new dense foam seating material designed to save space and weight. We were quite unhappy to learn that they were not designed for our comfort on these long, tortuous flights. They were hard and rigid, almost like sitting on an non-padded wooden chair. I think all the Lufthansa execs should have an opportunity to try them in each direction ---- the designers and purchasing agents should be made to travel both ways in them for a week!!
Other than the seat discomfort the service was good, as always ---- they just need to lose the new seats and not try to fit passengers into economy like sardines packed into a small can.