I have an older Nuvi, maybe a 07 model, in the work truck and a brand new Nuvi 270 my wife bought me over the summer that I have used a handful of times. Since I have driven around DFW for 11 years only using MAPSCOs and just started using these, I prefer a MAPSCO. It just seems almost every single time I use one it takes me the most funky stop light infested way. If I know the basic area of my location, I take the fastest way I know and then let it recalculate about 10 times and tell me to turn around until I get close to the place and let it finish the locating. To me it seems like it uses the same software as Google Map because I'm always correcting the route on there too. And I have tried it with different settings like "fastest route" and "shortest route" and both fail in my book. But since I have only used the Garmins Nuvi, I can't tell you how good or bad the others are.