Definitely go R/T! Coming from a guy that stepped down from an R/T to a truck that has some similar features of an express(damn hard plastic dash instead of soft touch stitched) I regret it all the time. Wish I would've gone sport or laramie. Now I have to spend like $1,800 for the leather, over $1,000 for the dash, $400 for the 430 radio(about $1200 for the 430N or 730N), $300 for back up camera, not sure if I can add power pedals. If the express doesn't have uconnect then that's another couple hundred and the express has a black and tan interior compared to the all black of the sport. It adds up really quick!