Hey guys, need your opinion on which unit to get. Im looking to spend less than $500, hopefully closer to $400. I will be fishing mostly the Ohio River, so I want the most power possible preferably with GPS and color. The units I am looking at is the Lowrance X510C, X135, and the Humminbird 777c2. Im leaning toward the 777c2 simply because the chart plotter. Any recommendations which model to get? If there is another you would recommend that I didnt list, let me know.