Looks are subjective. I would say get the car that feels more comfortable. The ergonomics are a huge factor, you do after all have to drive it everyday. I would say drive both back to back within a few hours. Try backing out of parking spaces, go through parking lots, make a u turn, listen for road noise . You'll find out things that matter by driving it in situations you'll encounter day to day rather than just flooring it up and down the road a few times, even if the mustang is faster