Have the same question Earndog. I am also looking to upgrade from my Hummingbird. Have been looking at Garmin, but don't know how the compare to Eagles. 500 watts seems to be the power suggested for salt water. Definately want dual frequency and some where near 320 by 320 pixels. Have also thought about including a GPS in the same unit, but the power rating seems to go down. Nobody has anything bad to say about Garmin, but haven't heard anything at all about Eagle. Wish I could afford a Lowrance.