I had the Garmin Nuvi 255W since Friday. I can't say enough praise about it. The ease of use is very good. It helps to do one's research. There's a bunch of info on the web from Garmin, reviewers, and of all places youtube. Satellite reception is fast, and accuracy is fine. I have found the 911 address data base is a little off. But being a surveyor I have found most gis data bases are lacking. Close. But not survey grade accurate as most lay people would think. I did my best to fool the Nuvi yesterday and today by keying an address, then taking a slite different route. The Nuvi did a great job of recalculating a detouring route without a hitch. As I said the heads up map is detailed enough to get me where I want to get to, and a detailed area view for me to see what roads are around me. My wife likes the 3d map. I like it myself. I started looking at different topo maps to load to the Nuvi. But as I got to looking at the maps and Nuvi, I started thinking it would defeat the purpose of having a road navigating gps unit with voice directions. The main propose I got the Nuvi!