Thanks for all the input guys. I'm glad there is a decent selection of camber plates out there. One other thing I was thinking about with regards to camber plate adjustments is if there is any castor adjustments. I guess going back to the Turner plates for the E46 there are sliders in the camber and castor directions. This is really nice. I noticed that the Ground Control plates are only camber adjustable but the Vorshlag plates have selectable bolt holes to adjust castor and a slider for camber. I'm wondering if the KW plates have any provisions for castor adjustment. Maybe that is the reason for the numbers around the perimeter of the camber plates??
Here are some good images I found from other posts: