I like it a lot. The depth marking in regular view is not the greatest but its not that big of a deal.
What is really nice is the 3D version really gives you a better feel of the contour of the bottom. For an example, When looking at a basic contours the closer the lines the sharper the break , Right? Well say your looking at that break and 30 ft over there is another break creating a shelf. Looking at the basic contour you know there is a shelf there but really does not register. You see it in 3D it just clicks in your head that you have different depths close to each other you can fish. Hard to explain but it is great tool that gives a good visual.
It is a good tool that can complement the map you have on your GPS/Chartplotter/sonar as you can plan on the pc and transfer the waypoints the GPS/Chartplotter/sonar.