I moved into my house a couple of years ago and the driveway and my back patio are filthy. I bought the eXP3500 and the brush attachment a month ago and gave it a shot. It gave me everything I needed to clean my driveway. I was thrilled to see how white it was under all that dirt. People told my not to get electric, but I disagree. This unit makes no more noise than a vacuum. I highly recommend it.
I bought this less than a month ago and have used it several times. Great for cleaning dirt off vinyl fencing, cement walkways, and stucco walls. Just the right amount of pressure.