It's a good unit, but the 5" screen is small. If it will be your primary unit, the gps screen will be hard to see from a distance. I used one on the TM for several yrs and served my purpose well. I did not use the map function, the basic map is almost worthless, you will need a map chip for it to be of any use, but most HB units have the base map, almost forcing you to buy the chips to have any detail of the lake at all.
GO BIG ORANGE !
I meant to behave, but there were just way too many other options available at the time.