Thanks guys.
I won't need access to the bag in flight, as I have everything I need in a briefcase that will fit in the side or overhead lockers - so it can go in the closet. On the other hand, I don't want to have to check baggage at any time on my 3 week RTW trip. It can add an hour each sector waiting for it and queuing.
I usually have a soft bag that can be squashed into any locker, but I am getting tired of carrying both it and my briefcase (both less than 7 kgs of course!) on the long walks between terminals. So I am thinking about getting a 45" wheeled bag, especially since reading about the best one to get in another thread. Two more questions now come to mind:
1. Will I have problems on other airlines (BA, LA, AA) in getting a 45" bag into overhead bins?
2. If space is a problem upstairs, I presently have 1J reserved (in a 2 class 747). Does anyone know if there is any extra space in front of row 1? I don't like climbing over (or being climbed over) when there is not enough space.