I've had my Vista for at least a year and have had absolutely no problems with it. But, as long as I have a GPS 12 I don't see any reason to even keep batteries in the Vista. I don't even know where it is. Hope I took the batteries out of it. If both my GPS 12's break or something I may have to try using the Vista. I better go see if I can find it and keep it in shape for a back-up GPS.
Of all the things I've lost.....I think I miss my mind the most.