Looking for a fish finder to put up front by my trolling motor. Currently have and old Eagle that came with the boat that I'll keep in the back. I would like to keep it around a $200 budget. I'm trying to figure out what is more important to me, color, down imaging, or gps. I see Lowrance has models that have the DSI, but then don't have traditional sonar, is that a big negative? Looking for what opinions/advise you guys might have.