I picked up a new sounder this past spring and was going to get the Dragonfly, having been a big fan of Raymarine (still am). When I got to play with one at a show, it would not do a split screen with a zoom... I do a lot of deep jigging and find that a split screen zoom to be very important, so in the end I went with a Garmin EchoMap and have been very happy with it... The Dragonfly looks like a great unit, just make sure it has all the features that you are looking for...