i have one. its as good as the zoo med. i kinda like it better cause it has a gauge one it. i wouldn't use it as a temp guide but at least i can drop it a few degrees acording to the gauge if needed.....if that makes sense.....
I like them alot. i have two that i do not need only used a few weeks. Work Great. Send Me a PM, i will give you the details. Also let me know where you live.