Just what I would say Braker, go for a fit take the measurements to a shop, job done.
Also if the 54 fit you almost perfectly why then drop 3cm and buy a 51cm?
I can't help but think you'd be better off getting something custom which will fit you perfectly and you'll keep for years rather than months. I mean at the moment I'm not sure whether I want to buy a new audax frame, take my 105 off my current bike and build that. Or go for a complete road bike (planet x on C2W scheme, or possibly even buy a TI road bike and build it up over a few months.
Just what I would say Braker, go for a fit take the measurements to a shop, job done.
Also if the 54 fit you almost perfectly why then drop 3cm and buy a 51cm?
I can't help but think you'd be better off getting something custom which will fit you perfectly and you'll keep for years rather than months. I mean at the moment I'm not sure whether I want to buy a new audax frame, take my 105 off my current bike and build that. Or go for a complete road bike (planet x on C2W scheme, or possibly even buy a TI road bike and build it up over a few months.