Thanks. At the end I changed to row 11, since I like the mini cabin with only 12 C seats. As the seat next to me was vacant it turned out to be a good choice. The only problem was that it was a bit noisy due to the proximity to the Y cabin.
While I liked the seat pitch and agree that the seats are slightly more confortable than the old LH C seats, I found the overall condition of the plane not very impressive. Especially the lavatories looked worn and were very smelly. Combined with a very unenthusiastic flight crew, it wasn't one of my best flights LH flights.
Cheers, Stefan