I already have a car GPS (mio digiwalker) c310. It is hard to find out where I am at when I am walking. It lags and doesn't refresh alot. I want to know the best, cheap handheld gps to make it easy for me to find the Cache. Doesn't need alot of features or road maps. Another Question is, will the more exspensive handhelds make it easier to get to the point or is it that they have more features. Thanks