Personally, I'm not a fan of 1AB on the 77E. There's a little too much activity throughout the flight, with the pilots going in and out of the crew rest area.

As for the seats, I've always been a fan of the old BE seats, on the 76E and 77E... though on my most recent 77E flights, I found myself getting off the plane with a slight backache. Not so on the 76E, for what it's worth.

OT, but I had the opportunity to fly the 77L recently on the ATL-LAX run, and found the seat was fantastically comfortable.