Hi Paul,
I have just Bought a Lowrance Global Map 5000c plotter
It had its first proper trip yesterday and I am really pleased with it.
The screen was very clear from full sunshine to darkness and the navigation feature made coming back 11 miles in the dark a doddle.
Its a water resistant set and uses the new Navionics Gold chart which is better than my old navionics chart by miles.
Although it can overzoom right in if you turn off the mapping, I found that there was no need to, even when searching for a wreck I had not been to since decca died years ago.
I had questioned why I had not settled for the 4000 black and white with a bigger screen and higher pixel count, but after 1 trip the choice to go for color seems a good one.
So much so that I have ordered a color fish finder when they are available next month.
I do not know what this set would cost in USA but I paid