Crappiecrazy....The Sideimaging part of the unit is fascinating. The GPS is an absolute failure. And in order for you to utilize the sideimaging to its potential you need a good GPS. The unit does not have this...not even close. You can read about the details here if you do a search. I paid 2000.00 to humminbird to own one. I love it and I hate it...all at the same time. Your older GPS probably by far outperforms the one on the 997. Do not buy one until the problems are resolved. You will be glad you waited if they fix it.