Whenever I fly JFK-LHR in WT+ I always try to get 29K using OLCI because I travel with mrs herbchris53 and I am 6'5" so I get unlimited legroom while still sitting next to the wifey. It's a fab seat.
Oh, and when I get up to walk about I generally don't walk in front of the single seat in front if I can help it, but on the odd occasion when I do nobody has complained.