I never used bluetooth set before, but I am happy with H700 that I purchased.Be very carefull about buying from E-bay. If it is too cheap, it could be a fake one. There are lots of fake motorola H500 and H700 sets in Ebay. Do your google search 'fake motorola bluetooth h700' You will find lots of complaints from the people who bought a fake set. It also tells you how to tell the difference. I almost returned my H700 I got from Costco, when I first found out that it's much cheaper on ebay. Then I noticed that most of those sets under $30 on ebay are not real ones.I decided to keep mine and am very happy with it. What I know is, fake ones perform so bad (static noise, short range, etc) that you cannot even use it. I am wondering about those people who left one or two star ratings here. Where did they buy their unit ? Do they know that they might have a fake one ? Flip the plastic earhook the other way . If you don't find word "MOTOROLA " , no serial number or a little check mark symbol in the back (just below the speaker), it's a fake one !!