I have a Marcum Showdown 5.6DB. Got it on Ebay at the end of ice season for a steal. I just searched Marcum and there it was... I wasnt looking for 1 in particular, just anything in my price range to help me hook up more. I love the vertical graph, but I do wish there were colors or better seperation. I have gone from days in a row being skunked to days in a row catching 50+ fish. Poppin quick holes and being able to see whats below is so much easier than jigging random holes with nothing under ya.