I use mostly Meguiars for the exterior. Any product I use a lot of (APC, degreaser, white wall, etic) I buy either Car Brite or Pro. I also use Poorboys Trim Restorer, NL, SSR's, EX for when I'm in the sun and because of the TR and NL, they're just so good compaired to OTC stuff. I don't like using any product I can't buy in a store for my business. That way if I run out, I can have it that day or the day after. On my own vehicles, I'll spend the extra to go with a high end product and wait weeks for it to arrive.