Tim, I have seen it next to the
CP150C Std. Horizon unit that has the same size screen but is smaller in its overall size. I liked the cp150c better because it was much better graphics and much brighter screen. Also, have the Navman 3100 instruments that will connect directly to the tracker, and I am very pleased so far with those, but will have to connect them thur the Nmea 0183 connections making it a little harder, but still like the Std Horz cp150c enough for the extra effort. Good luck, but do compare the units at BoatUS in a side by side demostration and you'll see what I'm talking about.