Originally Posted by 7bmwm3gtr

The seat stays are carbon, you are correct.

My 2009 2.1 weighs in the 19 neighborhood, with the Bontrager SSR wheels. I upgraded to better wheels which shaved about 900-1300 grams since the SSR weighed about 3000 Kilos, and my newer ones weighed about 1755. So it should weigh more than a pound less.

Now Based on about 3300 Miles of riding on my 2009 2.1, i can say that the bike is great for a novice or entry level rider, i havent really rode a higher end frame or a Carbon frame, but i can sprint and climb pretty well with my 2.1

I've never had a serious problem, only problem i have had is wheels going out of true (but the 2010 comes with the same wheelset so this might not matter) and the front derailleur tension gets a bit loose now and then, which is okay because i can adjust it from the adjustment barrells.

Components-
The 09 comes with Tiagra Shifters, Tiagra Front Derailleur, and a 105 Derailleur. Also it has an FSA Gossamer, which isn't bad.

My only complaint would be with the Tiagra Front Derailleur, it shifts pretty hard when downshifting. Shifting to a higher Chainring is O.K.

Brakes are strong, even though they are no-branded. (It's labeled "For Alloy")

The rear derailleur is fine as well, and the Tiagras have no problem shifting the 105, it's fast and responsive.

The Carbon seat stays dampens the vibrations, as well as lightening the bike a bit. However ,I think, it is not signifcant enough to choose over the rest of the 105 group.

Have you tried riding both bikes?

I like the 2009 2.1 more because of it's unique color, i was a bit dissapointed to see the 2010 2.1 in a more black color because black bikes are too common.

Good luck, and whatever choice you make hope you will have a great time with it. I'm having a great time with mine.