I honestly can't say I'm a big fan of the Concorde. Yes, it could go fast, and for it's time was quite a technological wonder. However, it has become outdated. Looking at it, the cockpit design reminds me of DC-4s and DC-6s. The cabin itself left sometime to be desired as well. Although a beauty to see departing at such high speed, with it's sleek body design, it just doesn't compare to other aircraft.
I have to say I love old airliners. I would give non-necessary organs to fly the 727, 707, DC-3/4/6, L1011, DC-9, etc., but I'm also anxious to fly an aircraft such as the B777-300, A340-500, B747-400, etc. I hope to see us move forward from a flight standpoint, but also forward from a comfort standpoint. Let's take advantage of the technologies available and build airliners that make us want to spend more time in them, not less.