I have the Stance kit with Sakura Garage camber plates on my 280Z. I am going to my first autocross and track day next month so I can't speak to how they are on the track yet, but they have been fantastic in the mountains and are comfortable enough for daily driving. They are stiff and the pillow ball introduces some road noise inside the car. No clunking though.
As for adjustment, the clickers are on the bottom but Stance has a remote adjuster available that drops through a slot in the adapter tube. If you're making adjustments often you will probably want these.