1) I can't say for certain but I think the bloke was referring to the cost of developing and maintaining it relative to the numbers built.
2) I find the A-10 Warthog pretty and most aviation buffs will say it has a face only a mother could love.
3) I'm with Steve, the Mustang (and Spider it was a fine airplane as designed, just needed a lump with more grunt than the original unit. The British Rolls filled the role nicely).
4) Of contemporary aircraft, the F-16 Falcon is as pretty as they come.
Fax
Fax Mk II - Hurrah! Welcome back!
1) The costs of Concorde went through multiple sets of smoke and mirrors, from the original development costs, to the transfer of the aircraft and spares to British Airways, privatisation etc etc - suffice to say the tax payer underwrote bucket loads over the life of it. But it was worth it.
2) A10 - pretty, maybe in a blind mother's eye, but what a gun!
3) A fine aircraft as designed, except for the engine - but then redesigned to take a decent engine.....

..... designed by the brits....... (cheap shot but irresistible!)
4) Yes - never forget seeing an F-16 square loop on take off, within around 2-3000ft height, when the first one visited Bruggen in the early 80's. A 30 degree per second+ turn rate. Nose authority in spades. Awesome. Particularly at that time, when we had...hmmm...the Jaguar and Buccaneer. And we are just getting Eurofighter/Typhoon.
Mind you, sad to see the F-14 is now in retirement.
MG Mark