I have the Elite 5dsi and like Pappy stated the screen can be crowded but the unit works great. I got the navtronics map as ell and on out resent trip to Norris lake it came in handy as we traveled to area we had not been to in a long time. It marked the hazards well and the depth couture was on mark IF the lake was at normal pool so one must know what normal pool is and adjust accordingly. Got mine this past winter at Cabela's on sale for 499 with a 100 dollar rebate. Good luck !