The new Elite 4 HDI is impressive and oddly the price did not go up, it actually went down considering, still $299 with a larger screen (same height as the 5) higher pixel count for more detail, thicker wires, separate power cable and transducer, combining the down scan and broadband sonar in one (DSI alone was usually $350)..........and they include the in line fuse now!
The new Mark 4HDI for $199 only reads broadband, you need to make sure it includes the 455/800 which is around $230
