I use the motorola v710 and HS850 headset, my RX 300 doesn't have blue tooth but this phone is great. voice dialing that is intelligent and doesn't have to learn your voice to work. With the bluetooth headset you push the button on the headset and the phone ask for a command, name dial or digit dial. It will recognize any name you have programed to a number just using the spelling of the name. If the phone is not sure what you said it will ask did you say, and then it repeats what it thinks you said, if it is right you say yes, if wrong you say no, and it will prompt you to say the name again. In digit dial you just say the number with no pauses and it will repeat it and dial, if it is not sure it will ask did you say, and repeat the number it thought it heard. Very nice for hands free in the car or when you need to write down information. The company I work for bought the phone and headset for me as they have a hands free policy and I couldn't stand those ear buds.
Jeff