Ford or Chevy...I have a Marcum LX7 now for 5 years and has been a good unit. I like the LCD screen much better than the flasher that the vex or cheaper marcums have. Every graph will have issues at some point. Have to remember these graphs go through extreme weather and function well. Most of my buddies that have been ice fishing have pretty much all switched over to Marcum and they all love them. One guy did have an issue with the Marcum M1 where it was showing too much clutter, but he just bought a LX7 lithium. Get what you can afford and will be happy with. Most guys out on the ice will let you check out their graph and you can make your own decision with buying a new graph. Nez