Interesting, I have an x85 and it broke....screen "mazed" out on me. Next year the neighbor suddenly died.....heart attack after shoveling snow.....complete surprise. Went to his wife's sale, there is an x85 on the table. Guy in front of me grabs it, then drops on the cement floor. Looks around then casually puts it back....stupid. Nobody else wanted it, Sue gave it to me. Guess what.....it works perfectly.
I don't think any sub forum here covers fish finders.
PS. Same guy picks up a beat up 044 Stihl I ran over and snatched it from him......."hey pal, these things can kill you". I got it for 40 bucks....sweet saw, love it.