Having never driven a RX-8, I take back my comment that it doesn't even compare to the FT86; given the testimonials in this thread. With that said I tried to educate myself about the RX-8, on Wikipedia, when I saw the below...
RX-8 Successor
"The next generation rotary engine, dubbed 16x, is currently under development.[15] Rumors suggest that the RX-8 may be replaced by a new smaller, lighter, simpler sports car set to compete with the likes of the Toyota 86. Mazda’s new 16x rotary engine is rumored to be at the heart of the RX-8 successor. Rumors suggest the RX-8 successor will include the introduction of direct injection technology, as well as aluminum side housings with 1600 cc capacity instead of 1308 cc capacity. Rumors also suggest that the new engine dimensions of the 16x will have increased stroke and reduced rotor width for improved thermal efficiency and more torque. Japanese reports and Autocar both claim that the next generation RX-8 will have around 290 horsepower. They also claim the car should weigh in at around 2,700 lb (1,200 kg), making it a true light-weight sports car."
- Wikipedia