I've a rena heater for the last 12 years never a problem

Pros: Good durability

Cons: none

I love Rena heaters. I've used others and have been very disappointed. Rena heater heat the water consistantly. They last far longer than anything I've ever used, and they take alot of abuse-I have an Oscar who sometimes has an attitude with things in his tank.

Pros: Heats very well

Cons: a bit more money

this is probably the best heater on the market. costs a little more but worth it. it is very accurate and consistant. lasts a long time and is easy to conceal.

Pros: dependable, sturdy, easy to read

Cons: none

We have had this light heater for over 2 years now without any problems. It keeps the water at a consistent temperature.

Pros: Keeps water warm

Cons: no con