Get the CAAD9, they hold up their value reasonably well. If 2 years from now you want to sell it, you won't have a problem, and Performance will have another sale. Cannondale may not be making CAAD9 frames in the US by then anymore. I also doubt the Fuji is full Ultegra, cranks and brakes in particular is where manufacturers like to cheap out.
If you're going to go for a Fuji, Performance will have better deals (lower up front price + 20% off). But i'd still get the CAAD9 even if it costs a bit more.