Good design and very effective. Worth the extra money in more durable hardware, connectors, etc. Soap containers are a little small to do house cleaning. Needs a more effective method of draining as not everyone in Minnesota has a heated garage to store the pump over the winter months.
The garden hose connector is difficult to attach the garden hose too if your hose end is not perfect, otherwise it will leak or come off with slightless movement of the unit. There is an upgrade fix to a 3/4" brass connector. I can't understand why this is not the standard connector. I would have given the rating of 5, otherwise. Did purchase the upgraded extension hose (recommend) along with the extension rods as I was power washing a two story home. These were of good quality.
Works on almost every surface just make the right nozzle selection. It doesn't make a lot of noise. Cleaned windows on second floor very good power. I use it to clean my car the patio,gutters,mold on bricks love this machine.