What are the best heaters???

[Rikko]

I've had 4 Ebos fail in me in the past 6 years. Never again. (They're now sold as Jagers under Eheim packaging, btw)
I've switched over to Tronics. I tend to be a little leery of Hagen stuff, but electronic heaters are the way to go if you aren't using a controller. If it fails, that means it fails OFF. I'd sooner come in to see my fish crabby with ich because the water dropped to 70 degrees than to come in smelling Euphyllia soup because it overheated to the mid-90s.