This pricey 6.5-horsepower vac is a contractor's dream. While light on attachments (offering only a 10-foot hose) and heavy (46 pounds), it's immensely powerful. Speeds range from 5 to 11 – at 5, it's average; at 11, it's suck-your-fillings-out strong and devoured any debris we put in front of it. Its HEPA filters even shake automatically to prevent clogging. [$550;]