Cannondale IS the segment leader in aluminium road bikes.

As for longevity, thus far I've done 16,500Km and 17,00Km on my CAADs, respectively and I'm not a light rider. They do last and are grouse bikes. I would much prefer a CAAD than a low-mid range carbon bike...

If the CAAD12 is as much an improvement over the CAAD10 as I've been led to believe, it is a great rig.

cheers