Color vs Monochrome display. I am looking at getting a gps combo but wanted to know what the advantage of having a color display would be. The units with the color cost more but the resolution is less. I like the Lowrance LMS-480 and Eagle FishElite 480. I also like the Eagle FE 640C. I want to run Hot Maps on the unit because I have heard they have really detailed maps. Thanks for your help.