I have been looking at the CAAD9 4 for a while now, but my local LBS is having trouble locating any in stock. I went by today and he had an 08 Cannondale SIX13 that has never been sold. It has full Dura-Ace components and looks great. The salesman let me bring it home for the weekend, so I will get to play around with that for a few days.

He also has a CAAD9 4 frame in the back that he says we can build up however I would like it. I haven't ridden the CAAD yet, the only built up bikes they have left are 60cm, which is way to big. My question to you is, old SIX13 with Dura Ace, or the 2010 CAAD9 more than likely with SRAM or 105. He said he could do the same on price for both which is about $1700.

I haven't read a whole lot about the SIX13, I know it is half carbon and half alluminum. My only concern is why hasn't anyone bought the thing.

Tell him 1500 on the SIX13 and he has a deal. 2 years on the show room floor , he may bite..

Do you prefer Shimano or SRAM? If SRAM, go with the CAAD9-4. If Shimano go with the Six13.

I'd personally go with the CAAD9, as I'm a big fan of the frame and think it looks pretty slick. I also really like SRAM, and prefer it over Shimano... However, I wouldn't mind a Shimano bike if the price was right.

He wasnt specific about which SRAM group, If he can get red I might agree, otherwise Dura Ace is the top of the line Shimano with one click gears, Also Six13 was a higher end frame in the Cannondale line when they made it than the CAAD9 although I like both frames pretty well. You do get "New" with the CAAD 9 vs Two year old but still like new with the Six13. Both will be old frames in 2011 because they stopped making Six13 and the CAAD9 goes out with the introduction of the new CAAD10. I would go with the bike with the best components myself. Which SRAM group did he offer? SRAM RED> Dura Ace but Dura Ace> Ultegra, SRAM Force, SRAM Rival IMO.

Oh and 105? No way

6 - 13. Although I use Sram -- Dura Ace can't be beat in many aspects.

I don't think it would be SRAM red for the CAAD 9 -- most likely rival if he says 105

More than likely what we would do is just swap the components from one of the CAAD9 4's they have in the shop. I'm pretty sure if I went with the CAAD it would be with SRAM Rival.