My GPS12XL has finally met it's end and I would like to replace it with a unit similar to this unit but a new or newer unit with basically the same features. I use it mostly on the uncharted portion of the Missouri river between Yankton, SD. and Ponca, NE where there a lot of snags. What I need is a unit that can record my track and return that I can follow in real time. I don't need a lot of fancy bells and whistles just a unit that will get me out and back safe by following the track. Are there any Garmin units out there that might fit the bill? I have been looking at the Garmin GPS73 and wonder how that might fit in? Thanks for any advise that anyone might be able to give.