Crossovers have become all things to all buyers. Looking for something on the sporty side? The RDX is up to the task. Equipped with active torque vectoring Super Handling All-Wheel Drive, it puts the “sport” in Sport Utility Vehicle. It’s also priced right. Tom Voelk checks out the A-Spec performance trim version and takes a close look at the True Touchpad interface that can be a deal maker, or breaker.