I just bought some of their products including the Boat Heavy compound and used it on the very bottom of the hull and it turned out really good. Their green glass cleaner is probably the best I have used for auto and their detail sprays are pretty good too. What I really like are their pads. They don't soak up too much product and you can use them longer then other pads I have used.
I neglected the heck out of our 2002 Silverado for years, a couple months ago I used their stuff to clean it up. Have to repaint the roof and hood, they are too far gone. I'm don't have any experience with anything other stuff. The pictures don't do the results justice. I won't use anything else.
I have used several of there products. A few years ago they were really good but are not what they once were. That being said, they will get the job done and you will be happy with the results.