Put a lowrance 337 on my new boat and absolutely love it. GO COLOR!!!! You can see a heck of a lot more detail down there with a color finder than a bnw. If you are going to get a bnw compare pixle counts as this is the most important part about seeing things clearly on the screen. One of the best things I have found with the finder/gps combo is that a lot of times when you are trolling you are trying to keep your gear right off the bottom. With the gps you can set a depth line and just simply follow it as you troll along. Anyhow... lot of good untis out there, personal opinion is that power and pixle count are the two most important features in a finder. Shop around and you should be able to find something.