Thanks for the feedback and experiences guys. I'm pretty sure it's not the temperature, as it was 35-40* actually, but the wind bit hard, and I had the unit in my coat pocket. I feel that it was the unit's inability to read targets in poor, dull light. It wouldn't read yellow grass sandhills, mesquites, deer, nada, nothing past about 300, but most of the time all I got was - - - -, no reading at all whether the unit was perched on my sticks, the truck, fence post, or whatever. I also know the laser receiver window wasn't blocked as I've done that before too. I'd rather not spend much more than $1k if I don't have to, therefore no newer Geovids, Vectronix, etc.
