22 years old - tourer (
ebay £50, dated from the date coded components and a sales brochure, being completely rebuilt to nearly new condition as I liked the ride)
10 years old - tourer
6 years old - audax
2 months old - audax/sportif
No idea which is fastest as have stopped using cycle computers but I suspect the 6 year old audax bike is quicker up hill and the 2 months one quicker down the hills (not due to relative weights, they're about the same).
So compared to Hilldodger's all pretty much brand new.