I can tell you the elite are very bad heaters, killed many fish a few weeks ago, the dials are way out, i would not touch them until they fix them as they might be a bad batch.
i had the heaters on 26c and they went over 33c, killed many fish,
the best advise is to get the best heaters, no matter the cost as why would you want to take a risk just to save a few dollars.
got any links??
I am just trying them. are they that bad?