I figured I would take the risk and try the cheap-o foam cannon on amazon. I have to say, even using Meguairs gold class (150 mL, still playing with the proportions) it is a solid performer. Maybe I got a fluke and will be dissambling the cannon tonight to check for a problem, but mine quit after about 3 and a half washes. Either way it will be replaced through amazon but that brings build quality into question along with durability. Here is a quick video of my use, and will be putting a good review up later.