I've purchased this Bluetooth 3 weeks ago and I cannot tell you how much happier I am with this headset then with any of my previous units. I have an hour drive to work, and 3 days a week I begin my workday when I pull off my driveway and dial the office number from my Motorola Q. I have a big SUV (4Runner); at 75 miles/hour on the highway, the car is quite noisy which makes it difficult to talk, as you can imagine. For the past 3 years I've owned a Plantronics (with wind-canceling), Jabra, and 3 different Motorola headsets paired with Treo 650 or Moto Q - people always had a hard time hearing me when I talk while driving. With this unit, though, it's a whole different story. Not only can I talk while driving on the interstate, I can actually talk with the windows rolled down. I've tried this unit while driving a convertible and people could not hear any outside noise - simply amazing. One day I was outside and the landscapers were mowing our loan - the person on the other end of the line could barely hear the mower, even though it was so loud that I could not hear my own voice. I'm very impressed with this gadget, and extremely satisfied with the purchase. Here is my breakdown of pros and cons (yes, there are cons)...PROS:- This is, quite simply, the best device out there when it comes to noise-cancellation. Nothing comes even close. The clarity is perfect in any environment I've tested it with so far.- Fit is perfect. I've read some people complain about it - I do not see it. It sits very comfortably, and there is no chance it'll drop from my ear. The ear hook keeps it very comfortably and very securely in place. Probably the best fit I've tried yet.- Unit automatically adjusts the volume level when you answer a call. It does a pretty good job of identifying how much noise is present and adjusts accordingly. I had to use volume correction only once, when in the middle of the conversation I've decided to roll down the windows in my car.- Unit is quite stylish and nice looking. It does not resemble any Bluetooth headsets out-there.CONS:- This headset uses only 1 button to adjust sound volume. It cycles through 5 volume settings from low to high, and after the highest one it goes back to the lowest one. I would rather have 2 buttons - volume up and volume down. In my opinion, though, this is not a huge drawback, as the headset's volume auto-adjustment feature does pretty good job of setting it right in the first place.At the end I must say that this unit is a very good investment for someone who's on the road a lot. And if you're a professional who conducts a lot of business on the road - this gadget is a must for you.