sell. It looks very nice. Braille also has a "battery protector" device that allows one to remotely disconnect or reconnect the battery. The B106 might be overkill for me since I won't be seriously racing my car. On the other hand, "why not go with the B106 since it is the lightest?" I believe I'd be okay with that one. I never run my radio or other devices without the car running. I'll have to give it some thought.