Check out McAir Aviation at Rocky Mountain Metro (KBJC). They have one of the newest fleets in Colorado (all are 2002 or newer and most are G1000 equipped). Read about em at mcairaviation.com
I am currently working on my commercial there and have no complaints. I even drive from Parker because I think KBJC is a much better airport than KAPA and more conducive to training. Controllers are nicer and there is less jet traffic that always gets priority over you at KAPA.