Quote Originally Posted by Rookie40 View Post
Which one are you using in your graph?
I use Lowrance and the built in Insight is nice, but I bought the Navionics Premium card to add to that. With my HDS touch units, I can use both maps at the same time. The Insight has better detail of older cover like foundations, bridges, old creek and river channels, roadbeds, etc. the Navionics has much better contour detail like drop offs, ledges, humps, holes, flats, etc. If you don't use Lowrance you won't have Insight, so go with the Navionics.