Only downside is their sunscreens get brittle eventually and can easily break. I'm currently building new ones out of bleach-bottle plastic.
I have had the same experience as Janeau with consistency. Same load / different readings depending on light conditions. E-mailed Chrony thinking something was wrong with my unit and got a quick reply with several tips for improving accuracy. Haven't tried out this info yet. This gives me something to do tomorrow now that my fishing trip is cancelled.
try chronotor.com same company
or remove one of the "c"s from ecchrony.com --> echrony.com