I flew aboard a BA Concorde from JFK to LHR in 1989 as part of a courier flight package (Concorde eastbound, Y westbound for $500 -- only $100 more than Y -- what would YOU have done?)

I'm glad I had the experience and glad I have a framed flight certificate on my wall, I'm glad I got to see the midday sky blue at the horizon but dark overhead (see the picture link Punki posted earlier in this thread), but in terms of comfort I'm glad to fly in today's F cabins.