Eagle FISHELITE 640C

Does anyone have reviews on this unit? Planning on buying a unit of some kind this coming fall and just starting a bit of research. I'm planning on staying inside the $550 range for a depth finder/gps unit which accepts maps. Toss in any other unit brand you recommend and please state why that unit over others. Thx.;)

gabowman, i was looking at the eagle cuda 350 s map myself , for 199 in cabela's it had gps and 1000 waypoints and insight lake maps installed, the reviews were good, but nobody has tried them out much , i cant find out much else info on them