I saw a video on YouTube and thought the guy was doing a paid infomercial the way he was gushing. He actually recommended the second best in his tests, due strictly to price. When I went looking, #2 had gone up $10 and this was about $35 less, bringing them very close, so I bought one of these, fully expecting it would be going back within hours. Nope. This thing blows... in a way that defies physics. I figured it would be an alternative to cans of compressed [whatever] for lighter jobs like getting the loose dust out of computers, leaving only the tough stuff for the can. Nope. This thing will take the blue off blueberries. Really impressed. Bought a second for one of my field techs to keep with him while the first is staying in the shop.