Many dealers have specials on the Elite 5 HDI. I have a Elite 7 HDI and from the best I can determine, they are very similar in how they can be utilized and the user manual is very similar. This would eliminate the learning curve.I am considering putting one on the back of my boat and mounting the transducer on the transom.I have an extra Hdi transducer so I could really use the "x" model since I have GPS on the front of the boat. Could also buy the unit without the transducer. Would love to hear any comments from anyone in regards to this unit. Good and bad!!!!!!........Thanks, for any comments........crappie1133