Following on from Bergerie1's post, this interview with D.P. Davies, former CAA Chief Test Pilot, is very informative. The first 33 minutes discusses the 747:
https://www.aerosociety.com/news/aud...he-boeing-727/
Having spent so many years arguing with Boeing over their aeroplanes, particularly all the 707s and most particularly of the 727, it was an enormous relief to me to fly the 74 and conclude at the end, that apart from one small point, it was by miles, the best aeroplane I had ever flown.
The rest of the interview is also worthwhile, particularly the last ten minutes!