I use a TomTom One. Like stated above, it can NOT be relied upon for the accuracy of it's maps, but it is great for knowing exactly where you are, reading the names of upcoming streets long before you can actually see them, and calculating miles.
I never, EVER trust it when it conflicts with my written directions.
As syncrosonix stated, google maps is a GREAT tool to use. Both Google maps and the tomtom GPS units use tele-atlas maps, which I've always found to be pretty good. The advantage to using an online mapping program, such as google is that it gets updated far more frequently than a GPS unit will, so it's more likely to be accurate.
And Kevin, you would have likely gotten better responses if you didn't finish your post with this:
Quote:
Now i know there will be your stupid remarks like "i just use a map, like real truckers should
Constantly accosting everyone else will NOT yield better results.