Yeah I ran against 4 sponsored Miatas at the recent auto cross. Those things are awesome in tight corners. That's why I want to do a big track. Something more suited to the Z.
I have to admit speed is priority one for me. Turning is fun though. I fell in love with corners in my first auto cross. I have always spent way more under the hood than on suspension.
I have this car down to 3080lbs full interior and AC with me in it and I did some minor suspension and brake upgrades. This thing handles so well it makes me want to turn instead of just go fast as possible.