Those are the 2 units I have been looking at. If the only difference is that you can't interlink the Eagle that doesn't matter to me. Is there any other difference? I did notice the 640 x 480 on the Eagle vs 480 x 480 on the Lowrance. Where is the best price on these units right now?Also I have an Eagle 320 on the bow now. Will the power cable and transducer cable fit right into the 642 or the 522?

