If you guys were in the market for a fish finder what would you get? I have a Garmin 160 now and I can't ever find baitfish or see the thermocline like the book says I should. Not sure if I don't have it set right or if there's another problem. Have used it with the sensativity set high but that seems to clutter the screen with noise. I've heard it said many times that the detail you can see is directly related to how much you pay for the unit. What's the preferred brand and model you guys use to find bait?