We actually have the 3100 model but this will only let me leave a review for the 3050. Just as powerful as any gas-powered, but no smell, no pull start, no carb to clean or spark plugs to change. Just a simple push button to start. It's light and small, the wheels go over grass pretty easily, and the nozzles are easy and fast to change. They go from soap/rinse (black), all the way up to full power to clean a driveway (red), and three in between. We've used it to power wash a vinyl fence, a shed, a driveway, and to wash cars (soap nozzle and gold 25-degree nozzle). Highly recommend. We've only had it for a few days so durability is yet TBD.
I bought a home in Florida, where the concrete patio and driveway was blackened with mold. I like the compact size and portability, but more importantly, it worked well. I am glad it came with multiple nozzle heads to handle various tasks around the house.