It will be my first road bike, and I expect to participate some triathlon races.
In fact I have the choice between the GTC pro 2011 at 1400 and the 2012 at 1700 in 56 cm size.
At this frame size very few change on the geometry : like 991 mm vs 987 mm of full length ....
The crankset of the 2011 version seem to be is a cheaper shimano model (not an ultegra at all) versus the 2012 is a 105 crankset.
Other transission parts are likely the same (mix of ultegra and 105 compoments)
Other differences seem to be the fork on the 2011 version which is a Easston EC70 versus a
So, for me, prohibitives arguments are the frame and the wheelset which are in my point of view the main part of a bike (maybe cranckset also).
Any remarks are welcome... Bye