I used their red powdered truck wash soap way back and loved it. It has been years since I have used it but if you plan to brush a truck it was one of the best soaps I used.
That is the only product I used beside some aluminum brightener that worked well, but I couldn't say all their products are that good, because I don't know.
I started with some stuff from my supplier and wasn't impressed. I got some Purple Power and used it at full strength and it works well. I tried some ZEP after that and went back with the PP. It works, is inexpensive, and is readily available at Lowes or Advanced Auto Parts.