I don't like the kind that water runs through as it seems like I end up with more water on me than the RV. The Walmart brush looks really good, but I am still working on a 10 year old brush from Costco. Cleans great, is gentle and has extension. Also water through handle which I never use.
2016 Jayco GreyHawk 31DS
2016 Jeep Cherokee Trailhawk Toad.
SE Washington State