I have the 73sv UHD and I use the default settings mostly but sometimes I just have to play with it to see what detail I can get, then set it back to default afterwards. I agree with 7X57 about the green screen for down imaging. I just got mine this summer and haven't learned it very well yet. I do like the side imaging for easing up the creek channels looking at treetops and docks. I bought 7X57's old bird and never even installed it because I found a heck of a sale on the Garmin. I may still put the bird on there yet though. I'm not sure if the two units of different brands would interfere with each other. I've heard they would and I've heard they wouldn't.
