I don't know about the NE chip but my experience says standard definition sucks. Check out navionics web app for your lakes. As far as features exclusivly on LM(follow the contour) If the contours are not accurate whats the point. The rest of the features work on Navionics too. I got an HD map from LM on my main lake and it is fantastic! I had a standard definition LM map before that.(worthless for follow the contour) Bob