Best heater?

[Sprinkle]

So, my Eheim Jager broke, is overheating and stuff... Tank size is 10-11 ish gallons and I'm looking for good, cheap and fully submersible heater that will keep temp stable.
Ideas?

 

[dougall]

Cobalt neotherm personally. Or keeping tanks that do well at room temperature.

 

[Sprinkle]

I have a betta and so I need a heater D: Only my 33 gallon is kept successfully without one. First I will contact the seller and see what they say about the warranty and will get Cobalt Neotherm one Much appreciated.

 

[Sprinkle]

Uh-oh! Can't find it on eBay or Amazon for UK, I'd rather buy on eBay though....