Makai has PC nav software, a Lowrance GPS/Plotter, and a
raymarine SL72C Plus Radar/Plotter.
The PC is our primary nav system and is linked to the GPS. The Lowrance has the world map and we just upload our routes to and shut the PC off until we are near our
destination. It works great.
We got the Radar/plotter primarily for the
radar. Since I did not want to spend the big bucks for the latest and greatest
radar we looked for models just being discontinued and found the SL72C plus Radar Chart plotter on
sale at Defender for $100 more than without (and saved $1-2K over the latest version). For very few dollars we have added redundency. The chips can be found by trading or used for very
cheap.
I believe that it is better use of the
money to buy at the best
price that fits your needs than buy because it is the latest technology. Most of the
current products are evolutions not revolutions of devices. For the extra
money it is not worth the buttons that will not be used.