I bought a Lowrance Endura handheld with a Navi chip for ice fishing. When I brought it home I read a lot of negative feedback and Cabelas even pulled them off the shelf so I returned it.
There are very few options for handhelds that will work with Navi and Lakemaster. I also heard Garmin released their own lake maps which sparked some attention (garmin handhelds look quality). I know the H2o is tried and trued so I may have to find a used one but, What is everyone else using and how do you like them?