200/83 sonar, gps, chartplotter, and micro SD card slot is a lot of features for 199.00. With a 3.5 inch screen you will end up zooming in and out to distinguish waypoints that are near each other. If you do not have gps or sonar now this would be far better than not having it.
One thing to note is that these do not have internal electronic compass, they rely on GPS. This makes getting directly on a waypoint a little difficult at slow speed. As you approach the waypoint the direction arrow will swing around.
If this is one of the new Elite 4 compact units could you please tell me where you got it. No one in these parts knows anything about them, when they will be at retail outlets or pricing? Lowrance advertises that they will be released in mid-January of 2012.....????