MYFIN,<br /><br />I use a Wide Eye and am very satified, you can get (down load) a manual from their website, it is very informative and tells you what each function does and also how to preset it prior to using the unit.
I have a HumminBird and I have to say that for the same price I should have bought the Lowrance and for a little more I should have bought the Garmin. I find Humminbird to be very inferior to those two products.
