Have this for three months now and I have yet any issues. This works with reasonable quality for its price. Obviously, the price is because it have only one heating element and no electronic knobs. Only cons is that when you bypass the timer knob to turn off the unit, it sometimes pass further then when the timer runs out, then it leaves the unit on.

Pros: Simple design and easy to use.
Cons: When you manually turn timer knob to turn off the unit, it sometimes pass further than when the timer runs out, then it leaves the unit on.