What are the best heaters???

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I used Ebo's for years and got fed up because the temperature would wander by several degrees. Never had an out and out failure though.

Now I've switched to Won titanium heaters. Not the kind with the LCD temperature readout, those ones have been implicated in too many disasters according to my RC search. The simple Won titanium heaters with no LED readout have worked well for me. They keep the temperature quite steady.