what are you running for electronics?

[chumbucket]

That Lowrance unit is very nice. I've looked at that one also. I'm not sure what the resolution is on the Furuno. My buddy has one and the nice thing about them is that with their "A-Scope" feature, and the intensity of the color of return, one can tell what type of fish you are looking at. Different types of fish have different body temperatures and therefore show varying degrees of thermal imaging.
They usually run in the neighborhood of $700 - $800.