I'm interested in the GPS units also.
I've been looking at the Speedhut units for awhile. They seem to be quality units. I haven't seen or talked to anyone that's used them though.
Considering the the advances that have been made in electronics, I'm willing to guess they're pretty accurate. My wife's phone even knows the exact coordinates of speed limit signs, it's knows when I'm speeding down the knats, well ...
Most boats are using GPS units now also.
