I bought the AG-75Q - Autogeek Quart Foamaster Foam Gun from AutoGeek. Seems to work as advertised. Used the small amount of soap that came with it fine. Used some regular car wash I had the next time I used it and I didn't see a huge difference. Have only used it twice though, will be pulling it out again soon I hope.

It did very well soaping up the car and I like the way it sticks. AutoGeek is a good company. If you don't ha any soap, buy some with your order. If you do have a supply of soap you like, try it and see how it does.