I've been pleased with Jabra Bluetooth functionality. I had a BT 250 previously, and like the design and the vibration feature. I picked these models specifically because I can wear them while riding my motorcycle, and know I have an incoming call because of the vibration (can't hear a phone while riding). Calls are important to me in my business, and I can at worst pull over and call back, if not in time to answer.The 5020 is better in many ways. Better sound, better distance, longer lasting. I've not had it run down even through numerous conference calls lasting hours.The ONLY reason it didn't get 5 stars is the documentation is online, and I didn't get to download the manual until days after I bought it, and then because I didn't understand the features it had, and had to dig them up. Even a mini-manual included would have been great. But the quick-start which came with it was simply not enough to truly quick-start.