Ever since cordless vacuum cleaners came to town, a range of alternative appliances have been cutting to cord, so to speak. Cordless appliances boast added convenience by providing the same performance without an annoying cable getting in the way, but do they actually deliver on this promise? After six years of product testing, I can tell you that the designs are very hit and miss, depending on the type of appliance. So which should you buy? Here is the truth about cordless appliances.