NubbinBuck
You cant go wrong with any of the above sonars. My take and coming from a guy who owns the following sonars: (yeah i have a problem)
LX7
Showdown 5.6 dual beam
Showdown ice troller 2
LX5
Humminbird 788ci converted in the winter for ice fishing use
I find myself using the Showdowns more and more. They are easy to use I dont have to look a circular dial to try to figure out the depth. Easy to read in bright light and at night. And phenomenal battery life. I think the SD gets overlooked because it is not color and is not as “sexy” as the other color units on the market. Sometimes I start with the Sd troller 2 and just finish the day with it never breaking out any of the others.
Dont get me wrong I love the LX 7 but sometimes i enjoy the simplicity of the Showdowns
Good Luck
Bob