Hmm, what would you choose?
Got a grand to spend on a new road bike, both of these fit the bill. Its only for Sunday morning and summer evening blasts round teh lanes, I gave up road racing a fewc years ago.
Both frames have very similar dimensions, to within 3mm generally, less than I'd notice. Is it worth going for the older design pro carbon for better kit? (Its a tad lighter too). Someone mentioned to me that 105 shifters were a bit problematic, but not heard of this before.
Current favourite is the pro carbon <girly mode> because it comes in that nice shade guru blue </girly mode>