Originally Posted by
Bandera
The proper frame size trumps any consideration of materials, get something that fits and you will be ahead of any niggling concerns of weight, aerodynamics or barometric pressure.
That said your pic doesn't scream "Wrong Size!" at a glance to me, might be worth investing in a professional fitting before any $$$ get tossed around to confirm all aspects of optimal frame size for you & the type of riding you do.
-Bandera
True. I just had a pro fitting and my current Masi is pretty comfortable. The major change was about stem length and seat height of course. Even in size 58 the bike weighed 17.0 lbs wo/pedals when new.