I am finding the handling a little quirky. I don't mind that it is not super stiff; however, the body roll can be down right unnerving, particularly on fast sweepers. It seems to just drop on to the outside back wheel. It definitely needs more roll bar.
On the power side, as per some of the blogs, this motor is all about torque. Also, after having a few turbocharged cars I find the responsiveness delightful. Kudos to Mazda for bucking the trend and not going turbo for the sake of the EPA mileage cycle.