I have a 2010 Giant defy 2 : http://www.giant-bicycles.com/en-us/bikes/model/defy.2.triple/3882/37100/
I'm loving the bike and other than some things like bags, a Brooks saddle, and new clipless pedals I've done nothing to it.
I have to admit that I'm something of an equipment hound and I'm ready to start learning more about road cycling equipment.
I'm curious to know, if you were going upgrade something on this bike, what would it be and why?
Oh, I replaced one tire with a gator skin because I had gotten a couple of flats in quick succession, but they may have been pinch flats now that I'm reading about those.