What is the difference in gps's

[Reba]

I have a Furuno L6100 in my boat and am looking for a gps to interphase with it. I want the unit so that I can punch in cordinates and go to them, mainly ocean fishing. I have noticed that there are many units made by Furuno that will do this. I was hoping for some help in picking the right one for me. simple is good. What is the difference, GP30,31,32,35 etc? Help

[skein]

No, no, no! Ya gotta tell us a fishin' story first. What if we give you all this GPS information only to find out you've never been near a fish!

Story time
Story time
Story time


Skein