So I'm waiting for REI to build a Marin Fairfax SC4 for me to try out. In the mean time I've narrowed it down to 4 "better" options I believe:

$500 Marin Fairfax SC4 - Marin Fairfax SC4 2013

$550 Jamis Coda Sport - JAMIS BICYCLES
$750 Specialized Sirrus Elite - Specialized Bicycle Components
$700 Cannondale Quick 4 - QUICK 4 - QUICK - Recreation - Recreation & Urban - Bikes - 2013

Which seems the best? Are all these brands about the same for hybrids? Does one have inferior components like brakes or derailleurs?

It sounds like disc brakes are not necessary for me as its pretty dry in Denver. I'm mostly concerned with the quality of the ride between aluminum frame and people say the Jamis steel frame makes for a better ride. I do like to ride fast and pretty aggressive, climbing hills as fast as possible, so I'm still leaning more towards aluminum with a carbon fork for a little less weight and more power, but does anyone have a recommendation?