I recently broke my Motorola HS850 Bluetooth and decided to upgrade to this newer model. I use my Bluetooth frequently - nearly every day - both at home and in the car.1. The range from phone to earpiece is significantly worse than the 850 - not realy an issue if you only use it in the car - but I get very bad static if I move more than ~10 feet away from my phone at home.2. I don't notice a vast improvement in sound quality either in listening or speaking on this model compared to the 850.3. The power cord on this model is not the standard Motorola charger plug (is that what you call it?) Both my cell (a Motorola as well) and the 850 could be charged with the same power cord, making it very convenient when I have to travel as I only have to pack one power cord - and they share one car charger. The 700 has a different plug - shaped more like that of a digital camera's USB connection, which is pretty frustrating. I keep a charger at home, in my suitcase, at work, and in my car - which the new Bluetooth is not compatible with, and I'm not about to spend another $30 purchasing more cords.If I had known all of these things prior to making the purchase, I would have just bought another HS850.