I have a Garmin, too. I love it, although I do agree about the sometimes circuitous routes it will take me on. As long as I'm not pressed for time, I figure I'm seeing parts of town I would never see, otherwise.

I take it with me when I travel and I wouldn't want to be without it. I'm in a completely strange city, but all I need is an address and I can find where I need to be. I use it for business all the time - I work at the client's house, so it's great for the first trip out.

She hates it when I don't do what I'm told. Her "recalculating" is nasal and sarscastic. So I get harmless "up yours" moments!