[jimmythegreek]

depends on what u need phil as far as GPS goes. I find having GPS and mapping on my sonar is priceless, I can mark fish caught and mark structure and ALWAYS come right back to it, my trolling motor will even take me there on autopilot if I choose to. If you need just sonar any color sonar is pretty good nowadays, I would go for sumthing w an HD screen, the newer one I have is so much brighter I can see the bow from the back in daylight, its worth it. Color is also the way to go, u get to see the strength of the return. I have a humminbird 596HD that I use for ice fishing, it has flasher mode for that which is nice, and its a great open water unit size and screen wise for like 300ish, doesnt have GPS tho. Figure out what u can afford $ wise then choose either lowrance or Hbird and Ill give u some recommends. U can find deals on used sometimes