Nitefiter
Well said old boy, "in thrust we trust" and a pair of 22.5k CFM's is better than a couple of boosted hairdryers..........tin hat time.
Having flown both i'd take the boeing anyday 310 knt 3500ftpm climb at FL280 at 50t. that would give a St Paulo sewer pipe driver a wet dream.....lol who cares that that they are 20 year old, i'd would have loved to have had a crack at concorde and thats older!!!