I use a lowrance globalmap 2000
works very good
bright display good readable and
nu manuals needed for this unit it works with simple menu,s
good unit for ribs works with c-map cards
you can mount the c-map reader inside the console
also have a super sonar function inside
you can see the bottom en structures
for info look at http://www.lowrance.com/marine/gm2000/default.asp for info
