I know this has been discussed many times, but I still have no idea what to do. I am a weekend warrior that just likes to catch enough fish to have fun. I fish shallow lakes mostly ( less then 10 feet). I do like to explore new lakes quite often so I think the mapping features would be nice. My fish finder is over 10 years old and I would like to upgrade.

I want a gps system but do i spend the cash for the HD or SI?

How well do these systems work in shallow and murky water?

Which way do i go for simplicity?

I need some direction, just too many options to choose from.