I am thinking about replacing my heaters this year with Helios heaters. I see that I can get the Helios controller with the standard IM Helios elements or BRS sells the Helios controller with their BRS elements. Any opinions on which are better? I know there's something about the Helios units that in theory can only get stuck in the 'off' position I think, but wasn't sure if that still worked if you get the BRS elements.