[jimmythegreek]

NONE of the fishfinders made come with any usefull lake map info, u must buy a navionics chip for the east. (lakemaster makes NO chip for NE) On the higher end Hbirds the included map systems contains depths for 2 NJ lakes that I know of, GWL and LH but its only 5 foot contours and fairly accurate. I have both the platinum and premium chips and they show the same thing, the platinum just gives u buoy and all markings for all bodies of water, and all the other lakes are just copies of the states depth charts, thats it. I have high end electronics and cant tell u that I rarely use DI at all, mainly use 2D/GPS on a split screen, and often use SI on a full screen. SI is worth it but NOT on a small screen, if you cant pony up for 8" or better dont bother u cant rly see squat unless you just want obvious big structure and not alot of detail. If your on a budget look for a used unit, there are lots of Hbirds for sale now that the new models came out, Im partial to them I like the menus and features, altho lowrance and others are just as good