I have used the mr. clean system as well. i liked it, but the unit is big, the spot free rinse filter needs replacing often and you need to use mr. clean soap. normally not a problem, but i tired of it quickly.
I found a "soapjet" at Walmart. it is a yellow spray handle that is nice and small and has a soap chamber inside of the unit. all told, it is not much bigger than a standard sprayer handle. the sprayer has 2 triggers; one in back for water and one in front for the soap. as you are spraying water on the rig, you hit the soap sprayer and it lobs a bit of soap into the stream. when it hits the surface of the car, truck, RV, it makes a nice soapy film. I use a microfiber sponge and a long handle brush to wash and it looks great!
I also changed to Turtlewax "ICE" Wax; very good. no hassles with white film, works on textured plastics with no residue (really), and it holds up well. I have many different kinds of wax, and this is my fav so far. great luster and shine. I have a Black Jeep, Silver Audi, Red Motorcycle, and a White RV. all have textured plastics, chrome or other surface that it works amazing on.
2004 BigFoot 29SL