When shopping for bluetooth headsets that will be primarily used in the vehicle, the most important factor is probably going to be it's noise-reduction capabilities. Jabra is one of the most trusted bluetooth brands, and they currently off a device specifically for use in vehicles called the Cruiser, that attaches to the car's sun visor and will make and receive calls as well as having many voice activated functions. Their Xtreme Noise Cancellation bluetooth earpiece is also an affordable and very effective choice