hydor brand heater 400w. used for 8 years. only failed due to coming unsubmerged.
Heaters are the ones I go through the most, Maybe get a year out of them. I think it might be due to buying rubbish ones though. Typically heater dies, rush to the LFS to get a new one.
"I'll buy a good one, so it doesn't die so soon, not another Aquaone."
"Let's see, do I want an Aquaone or Xerbitzolofishy Co LTD one?"
*Buy Aquaone again*
"Ok, well, I've got time to order a good one now."
Repeat in a year or so, because I never got around to ordering a good heater.