any want to help me pick out a fish/depth finder? i am wanting one with either down imiging or side imiging. gps isnt needed since the lakes i usually fish are not to big. i have been looking at the hummingbird 596c hd di or the lowrance elite 5x dsi but i dont have my heart set on one specific unit yet. im am on about a $600.00 budget. any recommendations or opinions youd like to share would be great. thanks in advance