As Bluetooth came out ear clips, I bought times as a part, and was rotten. Thanks to flat rate, it happens sometimes that I lead the walk the dog a long conversation, and constantly keep the phone at the ear, I do not like. Because of the bad experience with my ancient "headset" I now wanted to do something in a search for higher-priced region, but then I saw how much money you can spend - it's in the region of a middle-class Mobile Phone Handsets. Then I once looked on Amazon and read above all the reviews, and just risked an order with the HM1100. It had to be already this headset because I wanted to use two different handsets without always new pair the part.
Conclusion: I'm totally thrilled. Sound is fully in order, and comfort also.
Additional info: I have among other things a Nokia X6 smartphone, which (2011 Ford C-Max with Bluetooth hands-free) works on my car just as a phone. Navi announcements or Skype & Co does not arrive at the car. The HM1100 there is thus no problem at all.