I had the opportunity to drive about 700 miles this past weekend using both my Garmin (205) and Google nav devices. I've had various Garmin's for about 5 years so I have a good base of comparison. The net is that the Google device compares very favorably to the Gramin and even exceeds it in some important ways. The google maps are great. They are more detailed than the garmin. Side by side the garmin's almost look cartoonish. The google maps look like real maps. The one thing they could use is a better color for side roads in daytime mode. They are very light grey against an off white background. They should be darker grey. Some of the fonts could be bigger too. Nighttime mode was very good. Voice sound was not quite as good as garmin, but good enough. I liked the text to speech vs. the garmins lack of it. Route and reroute calc was about the same. Loved the ability to do email, phone, apps while navigating. Voice Search (and search in general) was awesome. This is one area where google won running away. With garmin there is a bunch of text entry and you're not really sure how to enter it. Google leverages their search technology here. All you have to do is say something like "Navigate to hotels near the Mall of America" and it presents you with a list to select from. Nice integration from email/web with navigation. Just click on an address and you have the option to navigate there. Google maps were more up to date. My garmin maps were about a year old and there were two times where google routed me correctly due to obvious recent changes in road construction. I ended up trusting the google nav more. There was some variation in routes but they both got you there. It would be nice for google to have more options such as shortest route, fastest route, avoid this or that. Traffic updates worked well as far as I can tell. Somewhat useful in metro areas. Google did a poor job of extimating arrival time. That's one thing the garmin units do a great job at. For any 3hr segment I'd say the google unit overestimated by at least 1/2 hr. It got more accurate as the trip progressed but the garmin is spot on here. While google search is terrific the "search along route" needs some work. The search results seemed to be returned randomly. I'd like to see a list of MacDonalds sorted on nearest to My Location. Google should make more use of the Layers. It would be nice to move waterways and green spaces to their own layer so you could just have a navigation layer with roads only. The Gas, restuarant, etc. layers were OK but needed to be relative to My Location (see above). Would like to be able to Save any My Location as a Favorite or click on the "car" (triangle) and have it tell me details about where I am - like the garmin. The display had better contrast than the garmin and sharper resolution. I started out using it in landscape mode but ended up liking portrait better. In portrait you can seen farther in front of you. I'm not that interested in what's to the side of me. It would ne nice to have driving orientation and speed on the main screen. One problem was that google tends to be a little schitzo when the car is stopped. It tends to bounce the car indicator around as it calculates current location. I suspect this is because of the inherent innacrucies of gps positioning. This was a minor annoyance if you were near an intersection of close streets. Sometimes the car would bounce around between the direction you were headed and the side street. Than it would respoition the map and recalc the route. The garmin just showed the stopped car. Google just needs to relax and not try to react to everything so quickly. That's it for now.