I tried some similar, less expensive ones and they do not compare. They either didn't work well, were even louder than the real thing, or broke after one or two uses. IMO, the Hitachi is a must have in your toy box. The cons - it is loud, and it does have to be plugged in which limits how/where you can use it. The pros - when used alone, it is great for a quickie (I mean super quickie), and is great for use with a partner in certain positions.