Kenwood KCA-BT100 Bluetooth Hands-Free Unit - KCA-BT100

First let me start with the positives. I bought the BT100 to attach it to my Kenwood KDC-X791 Head Unit. I installed the BT100 myself less than a month ago. Its a huge improvement over using an ear piece (which I still use when I get out of the car). The sound quality is better for both ends of a conversation. I did install a retractable Mic. I clip it to my seat belt when I get in the car. This made it so much clearer for someone to hear me. It connects fairly quickly (5-10 sec) when I turn on the car. I love that it pauses the music and automatically answers the phone. The time to do so is adjustable 0-99 sec. So I dont have to move one bit. I am not too familiar with the difference with the hands free profile as oppose to the headset profile for Bluetooth applications. The first annoying issue I have might deal with the differences in the profiles. When a press the button on my headset it activates the voice prompt software on my phone so I dont have to look through my phone book to look up a number. I havent found a way to so with the Kenwood head unit. The next issue I have is with the number of speed dials. Kenwood allows for 3 speed dials. Most head units have 6 radio preset digits. I dont know why the limited to just 3. Last is the painful process of registering more than one phone. It can have 5 phones registered but only one can be active. The process of registering the first one is easy. The following phones are a pain. You also have to remember to change the default phone. A little harder for my wife than me. Overall it is a little pricey upgrade over headsets but the sound quality and convenience is worth it for me. I never have to regret when I forget to bring my headset.