read the Road and Track from a couple months ago. Mustang vs Camaro vs Challenger. Mustang-solid rear axle. Camaro and Challenger-IRS. Every tester liked the Mustang the best. Because a solid rear is the best set-up ? No, because Ford has been building the Mustang for almost 50 years, they got it figured out. No system is best for every scenario. I know the 3 link has it's drawbacks, but overall, for straight line, cornering, ride and maintenance, it's pretty close to being perfect.