Just picked up the cheaper Garmin Striker 4 for the canoe to replace my Showdown Troller.
Have not used it yet, picked up the portable bundle. Will probably get an Ice ducer come winter.
The ducer it came with will shoot thru the canoe hull when mounted in a foam block adhered to the floor with some added water.
I generally need just the depth, but this will be a step up with the GPS. (Lining up trees on shore gets old )
I'm also curious how it will perform on the ice in flasher mode.
As a GIS dude, those mapping features sure peaked my interest, maybe if I upgrade the boat locator one of these years?
But for the canoe.....this unit should work great.
Good luck with your decision. I know this post probably didn't help ya.