Couldn't agree with Blue Oyster more. Great unit with an amazing screen for the size. Have it in the a 21 CC and don't need much else. The fishfinder isn't bad either. Blue Oyster if the screen is lightening up in the sun it may have some water in it. Garmin has a one year warranty not covering on that kind of stuff but they don't warranty shipping costs which is bull.
In my opinion,
Garmin is the most user friendly GPS made !!!
I'm not a big fan of combo units and splitting screens though, but if space is limited, go with one!
For fish finder/ bottom machines, there a better choices than Garmin
I have a simple Garmin 152 on the boat. Just a GPS not a plotter/finder. I love. Like others said very user freindly. Harly ever had to look at the manual. Does a milllion things although I just use it for a handful. Someday when I get some extra doe was thinking of getting the 192C. Like Ronnie said I personally would rather separate units but space is a factor in smaller boats.
Same set up as Blue Oyster. Garmin 178C on an 18' Parker CC. Perfect for an 18' boat. Lots of features and easy to use. If you have the extra money, get the color. Better resoultion.