I purchased an LX7 this past spring and used it a few times before the ice melted. It is an unreal machine. The options on it are endless and the separation is unmatched as well as many other great options. No experience with the hummingbird but I heard they have a lag time between your jig stroke and what the screen relays, the marcum has no lag at all. Using the graph is a game changer. I really like marcums ability to update as well. The maps would be handy at times but nowadays most people have smartphones in which you can get navionics on as well.