I was at the same event, and really found the 2017 CX-5 to be a bigger upgrade than I expected. (I drive a 2014.5 GT w/ Tech).
The GS 2017 handled the skid pad really well, and had great control through the speed bumps and potholes. The CRV was pretty brutal through all of that, but mostly fine in the slalom. I was pretty surprised by how the 2016 GT did on the same course. It wasn't as bad as the CRV, but I definitely noticed the refinement with the 2017.
The quieter ride cabin was noticeable, as was the design, fit and finish inside. I spent some time in the 2017 GT later, and it really felt like a step up from my 2014.
The two laps in the Miata were also a blast. I wouldn't call myself a car enthusiast, but this event was lots of fun, and enlightening.