I came from the HB 898 and 1199 and they are pretty darn good units. Just got a new boat and went with Garmin sv series. I am very happy with its performance relative to price point. I'm just hoping they will be releasing custom mapping or other mapping options down the road, only thing left to be desired for me. My biggest complaint with HB is their readout boxes that eat up valuable real estate and should really be a customizable overlay option.