Garmin - Nuvi 670 Review

I purchased this GPS because I am a contract network repairman. It has been a pleasure and somewhat of a pain. The reason is most of the time the address I need to go to is in the register but sometimes it is not. I have found that if I have to go to a brand new place then it is not able to find that particular address. I have even uploaded the newest maps from Garmin. If you plan to keep the GPS for a couple years the lifetime map upload for a onetime fee is better than per map every quarter. I learned that after I had purchased a single map. The Bluetooth works well however I am hard of hearing and I prefer a Bluetooth in my ear instead of using the GPS. I used the FM transmitter but the problem with that is as you travel a station may interfere that is on the same frequency. I find that the touch screen is very intuitive to use. Where? and you fill in the information. Overall I like my unit and the reviews did not steer me wrong on this purchase.