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I just got into the ice sonar game too and ended up buying a marcum 2beam showdown over the dial flashers because it was in the same price range as mid to high level dial flasher but I prefered the display. Very happy so far. I'll likely never buy an analog dial unit now. BUT to answer your question very specifically - which brand of dial flasher is most reliable/trouble free, i alot of research and the answer is Vexillar. Something like a 99.6 % success rate for their products meaning it's only a tiny,tiny fraction of units that go out to the customer faulty, malfunction or need to go back to the manufacturer for repair. That's definitely something worth noting. Put another way, if Vex MADE a product like the marcum I bought, I probably would have gone with the vex version.