I have a fair bit of time on 747 Classic's and most of the passenger versions are a little noisy, but the freighters are way too noisy.
I'm also nearly two metres tall and find that I'm cramped for space in the cruise.
The main problem with the entire plane is that it carries more than four hours of fuel! If they got rid of the centre tank and made the inboard tanks the same size as the outboards it's have just the right range to be very comfortable.
