I'm not sure if the other reviewers have tried any other products. I personally have owned more than 6 different kinds of frothers similar to this battery operated type. This one is probably standing at the end of my preference. The four-batteries operation does not give any advantage on its power. I have these 2-AA operated frothers that worked much more efficiently. Unfortunately four of them failed to work after several years. The only one left now and still functioning well was purchased in Germany 11 years ago and is made in Germany. 
The whipper of this machine is critically responsible for the low quality of froth milk. I would not recommend it if you are a cappuccino fanatic.