I have the Lowrance elite 3x, elite 5x, and a hook2 5 split shot. All are in a ice pack. Below are my comments on all 3.
Elite 5: This is my go to unit. Split zoom, amplitude scope and good target separation. No undesirable issues that I can think of. It is the best of all 3.
Elite 3: Decent functional unit. No amplitude scope or split zoom. Target separation not as good as elite 5.
Hook2 5: Good chart plotter and preloaded lake maps. Amplitude scope and split zoom. I am disappointed with sonar so far. Unit is feels like it lags compared to other units. when hole hopping it sometimes takes a few minutes to find bottom and register my jig and can lock up from time to time. I was really hoping this would be as good as the elite 5. In fairness I am still learning it.
Hope this helps if you decide to purchase a Lowrance unit.