In my shopping around I ran across the Humminbird 788ci HD DI combo unit. Seems like a pretty nice upgrade, about what im looking for. Checked BPS and Cabelas and they both have it for 799. Looked on ebay and I can get it new in box for 588 plus free shipping. Does anyone have one and if so, whats your thoughts? I appreciate all the info from you guys and have been trying to read up on all the different units and bells and whistle to try to decide just what it is i really need and will use.