I recently upgraded my 899 with the Helix 9 ci hd si at the counsel and am very pleased with it, now I want to upgrade the front HB 597 ci hd with GPS. With the budget I have I can either get the down image or the sonar with GPS, right now I have both and switch back and forth quite a bit, about 50/50, would like some thoughts on which one others would choose?

Thanks,

Ray