i had a few probs with the 797c2 by humminbird mainly the small size of screen, i went to get a lowrance to replace it , just couldnt go back to reg sonar , i was in one of those why the hell not moods, needless to say i walked out with a 1197c , all is good as long as the wife thinks its a 500 buck fishfinder lol ....if this screen gets too small for me ill just have to give up fishing