Yeah, I know the name is kind of a misnomer, but I've got my first sonar, and I'd like some tips on using them. I ordered the unit from Cabela's and it hasn't arrived yet, but I have been reading the instruction manual and playing around with the emulator, both of which are available on Eagle's web site. Here's a link to the one I ordered:

Eagle FishMark 320

The features look good, and the price was extremely reasonable for a unit with such high resolution (320X320 pixels). The unit runs $200 for the base version with skimmer transducer, $250 for my portable in a soft duffle bag type case with battery and suction cup transducer. I plan on using it in the local lakes to see what's down there.