Thanks all,
The environmental guys usea Sokkia for their locating. I have used it in the past. It is very accurate, but it doesn't do navigation. Last Friday (when I needed to do the work) there was no one in the office who could make the Sokkia read in UTM, or convert UTM to the northings and eastings it used.
We have a couple Garmin Etrex hand held units. We had a Fill placement job that required GPS coordinates to log in our testing as there were no control points on the ground. They also seem difficult to use for navigation.

10-20 feet accuracy is fine for the test boring location work I do. I will look into the Mio.

__________________
1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags