The red track was taken with my Garmin 60CSx and the blue one with my Garmin Oregon 400i. I was walking my dog. He was off lead and stopped a few times, well, he's a boy and needs to leave his business cards around... So I did have to make a few about faces in motion, just to check on him. I think those about faces show better in the Oregon track, but while I walked at night without a light, I don't think I was as jittery as the blue track shows me to have been. OTOH, I don't think I was as smooth as the red track. I tried walking in the middle of the road. As you can see, both tracks show me a little to the side, both being equally wrong, but by how much? The scale bar shows 300 feet! This is a narrow road where two vehicles can pass, but with care. So we are talking about a few feet, maybe ten or so. To me, both tracks are acceptable. Both GPS units were tracking with the same setup, by distance, a point every