Came across this thread and thought I had already answered it, but apparently not!
My first commercial flight was on an BEA Airspeed Ambassador. I flew on a long list of different types thereafter, including Concorde, but missed out on the Bristol Britannia and the VC-10. I had also missed out on the Lockheed Constellation but managed to finally tick that one off when I made a memorable flight on board the Swiss Connie in 2006. Purely on the piston side, I also flew a fair number of times on the DC-3, DC-4, DC-6 but only once on the DC-7. Other piston airliners I flew on were the Martin 4-0-4, C-46 and Convair 440. According to my Passenger log I have to date completed 2220 flights in 68 years.