I like the design of the 2500 Chevy...They are both fully capable trucks but there is more to a vehicle than just the motor. The frames on the Ford are an older design compared to the GM. I personally feel like the interior on the Chevy is better, but that's just my opinion. Also, the cab on the Chevy is quiet, like whisper quiet. For some that's a problem, for others it's not. I have tenitus and can stand a little noise.
The Ford is a proven design, proven motor, and a comfortable truck. Really, for me, it would come down to which truck I could get a better deal on.
Thanks!
Jeremiah