I started with Lowrance but am now Humminbird. I spent a lot of time learning my way around the Lowrance units and got pretty good on them. I know the consensus is that Humminbird is easier to navigate but I don't completely agree. Maybe my brain is just saturated and overwhelmed with two different setups within one year. I still need more time with my birds on the water. As far as the DI and SI quality, I'm with my birds all day and that's why I switched to them. 2d is another story and I miss that quality from the Lowrance units.