Hey Paul
I have just bought the CFR Eco 500. Think it's similar to the cascade. I wanted a back up machine to the truck-mount and to clean flats etc, but wanted heat. It is just different as it atomises the spray and sucks it back with the wonderwand. Gets hot and cleans, but truckmount it aint. However it recirculates the solution in the tank and filters it out. You need to top it up and clean out the filters, but it takes seconds to do that. Just like the idea of not spending all the time emptying and filling and with the extended hose it will do anywhere.
Bought it second hand. (I am told that you can overclock the pump to 600psi as it's an 800psi pump and still clean with one pass.)