Hi Bill & Vic,
Thanks for your input.
The Kiwi grip is $140 gallon. and the Kiwigrip guys in CA recommend 1 gal. + 2 qt. @ $42.50 each; which is $225.
Practical Sailor gave the Kg a good write up and, from the photos it seems to be a very attractive surface.
I am going to use the light grey, which if the swatches and photos can be trusted, is a little lighter that the original J/Boat grey.