I started geocaching with a Venture HC. I ended up buying a Nuvi 550 because we wanted a GPS for the car as well. This model was recommended by a friend who is heavily into geocaching. We wanted the car GPS to be able to do both. I recently went geocaching with a friend and her little girls who have never been caching before. I gave the girls the Venture HC and let them lead the way while their mom or I worked with the Nuvi. The Venture was MUCH more accurate than the Nuvi that particular day! Haven't cached with them both before, but I will be again to see what happens. I was glad we had the Venture along with us that day or the girls may have been very disappointed. It may be a case of the satellite reception in both our cases. I would suggest maybe turning off the Venture and acquiring new satellites, and mark a waypoint and see how the accuracy is. Sometimes I believe you acquire more satellites than others, and that could be part of the issue (I would imagine, the more satellites you have, the more accurate, but I'm not an expert). Don't give up on your Venture HC, we've found many caches with ours. Good luck!