I've already gambled on a fume one sight unseen (save for some pics), so fingers crossed the size works. I just love the contrast of the fume dial and the orange hands.

: Not at all! The major dimensions are remarkably similar - 3rd gen
: is circa 1mm wider (the crown is more recessed), about the same
: less tall and about 1mm higher than the 2nd generation.

: Despite the similar dimensions, it gives a very different
: impression. You have to remember that for the 3rd gen it's all
: case; no cut out between the lugs and the mineral crystal is
: near flush with the case. It wears quite differently too,
: feeling much taller on the wrist thanks to the case (second
: generation Carrera again has quite a domed plexi accounting for
: a fair bit of height).

: If you're comfortable with the overall size of Carrera 2 and how an
: automatic Autavia feels on the wrist, you'd be fine with the 3rd
: gen Carrera. If you've only worn 1st and 2nd gen Carreras
: though, I'd recommend trying a 3rd gen on to make sure it's
: comfortable on the wrist before buying.