I bought this after years of owning a Garmin Street Pilot, and I've got to say, while it's acceptable and much cheaper than the Street Pilot, I probably wouldn't recommend it to anyone. Unfortunately, the Street Pilot isn't made anymore.
PROS:
The Nuvi is small and easy to stuff into a airline carry-on or even a large pocket. It will run off batteries for those short trips when you don't want to plug the thing into the cigarette lighter (aka accessory outlet). The bundle of accessories included with this package is great. It uses the industry-standard Navteq maps.
CONS:
This thing has a bunch of usability issues. There is no "Speak" button as on the Street Pilot to get the voice to repeat its last instructions. The keyboard beeps when you touch the keys, but not always. Often I've pressed a key, heard no beep and seen no character, and then pressed the button again, only to get two characters. The screen, because it's so light, sometimes vibrates with the car dash. The battery life, advertised at 4 hours, really seems to run about an hour, and there is no warning when the thing's about to die. Beyond that, the Nuvi seems to take longer than the Street Pilot to notice movements of my car; it doesn't seem to track my position as well. The built-in speaker, combined with the automated voice, is often difficult to understand, particularly on common words like "left" and "right", which is all the more annoying since the instructions can't, as I said before, be repeated.
Finally, I find it hard to believe that this is a function of the Nuvi in particular -- my Street Pilot would probably do the same thing -- but on my last trip with the Nuvi, it repeatedly told me to do impossible things: take a left turn across a median, make a left turn onto a one-way street heading right, etc. Again, this is probably a function of the Navteq maps for that area (in and around Cocoa Beach, FL), but it was really disconcerting.
In short, after my previous experience with the Street Pilot (which I still have, in my wife's car), I'm pretty disappointed. The Nuvi is a lot cheaper, but it's a poor economy. When this thing dies, I won't miss it. I don't like the Magellans I've used, but I will definitely be checking out brands other than Garmin for my next GPS.