Always do a lot of debating and a lot of researching when it comes to heaters - always resulting with the same mixed advice and preferences.
I bought six of these for some small tanks, gambling on a good brand name along with a great sale price. I couldn't find many reviews on this product anywhere so decided to give it a try.
Four have been running about a week now. Very easy to install and seem to be fairly durable.
Drawbacks are the short cord, only about 5 feet, and VERY inconsistent thermostat control. Each heater is different.
After careful monitoring and adjustments for a day or two, temps are holding steady, way off the setting, but steady.
I will update as time goes on.