I've got one which I use as a portable unit for Canadian trips. I like it just fine, but I would like a little bigger screen. Otherwise it works fine. Yes, you can split the screen. Keep in mind it does not come with lake maps. However the GPS function works just fine and the ability to map contours is terrific for waters that are not mapped (requires 4+ option). I'm happy with the purchase. Also the mount is the same as for some of the auto GPS units by Garmin and you can pick-up a suction cup mount for the display unit on E-Bay for a few bucks. That's really handy on camp boats. I use a C-Clamp and a 1X3 board for a portable transducer mount along with a 10ah battery for power.