Originally Posted by codprawn
I manage fine with my Garmin GPS12 and my mates Eagle fishfinder.
I have a GPS 12 too but manage is the operative word. I can manage with a chart and a compass but I don't choose to.
I find they are EASIER to read in bright sunlight!!!
That's not what I said. If you are facing the sunlight your eyes will shut down and the GPS screen will be in the shade. It's not uncommon to be travelling into the sun when boating and I know I can't read a mono screen in this situation.
This has been discussed before and I posted pictures of a colour screen adjacent to a mono screen in subdued light. The mono screen is all but invisible.
However, to identify features on a mono sounder you need to be able to clearly see the shades of grey and this isn't always easy. The colour sounder uses contrasting colours adjacent to each other and reading it is therefore easier.