BEST BUY if you are looking for a professional looking Bluetooth Headset. No if's or but's.  I've been using this product for about 5 months now and love it.  Since then, I've suggested this product to several friends and familiy members and they love it as well.  Overall, with all the people combined, this product has been used on several different phones and so far it's worked seamlessly on every phone. If you wear a headset at work because of your work phone, you can buy the adapter which is about $100, and this 510 headset can be used at work as well.  Instructions are simple, easy to follow. Amazon's price was one of the lowest ($50). I would DEFINITELY buy this product again.