Rating: 
I bought this just because I was headed to Europe for bit, particularly England. I found the text to speech to be probably one of the most valuable features, since I got directions while being able to focus on driving on the proper side of the road. Navigation was flawless though, pretty much the trip went perfect because of the Garmini 670 Nuvi GPS. Being guided like this was like for me to go in a straight line it seemed.
I did use the picture viewer a bit, it may be a bit laggy for the highest image quality, but still worked quite well. Widescreen worked well to compliment that feature. I did have a hiccup trying to connect to the radio, but that was solved with a little bit of positioning. Other than that, the Nuvi 670 itself is delightful to use with colorful maps and menus. All very easy to navigated and use.
