I have 5 of the Covert Code Black LTE models. At any particular time, one is usually enroute back to Covert. They are usually replaced with a new one and that hasnt worked out too bad since they are the new model. At the same time, it does kinda suck to have a camera down at the location and then troubleshoot it and ship it back.
I wish they were more robust but they mostly work pretty good. I havnt heard of one that everyone raves about yet so prolly just stick with Covert.