I think this is funny as I have an old master Pet one here which I have had for about 4 years. (I kid you not) and it is still going strong.
I am def not saying they are a good heater but it is one I bought a long time ago when I had no other option at the time and it is used on one of my small planted tanks. I am not sure about the temp, whether it is accurate or not, as it is in my fish room and I dont have a thermometer in the tank. I wouldnt buy another but I thought I would just mention it. :lol:
I have had a lot of success with Aqua One heaters.