Hey everyone. I am going to be playing with Optimum and ZPC soon (and maybe some NXT) on a couple of cars. Now I don't know what pad and product combo will have what effect on the paint of each car, so I would like to experiment a little. Do I have to dedicate one product to one pad? Like, if I use ZPC with a blue, can I use Optimum on the same blue after a thorough cleaning? What about dissimilar products such as NXT? I would rather not have to buy eleventy billion pads to find out what works for me. What do you all suggest? Thanks!