I was gifted this a few years ago, but only used it for 4-5 meals a year during winter.
I recently rediscovered it during a kitchen tidy up (ie getting rid of all the gadgets I never use) and have been using it once a week at least.
However, the knob for adjusting the temperature snapped off the first time I tried to use it, that's ok, I always have a pair of pliers in the kitchen, but on my first really long slow cook (10 hours) the knob on the lid actually melted off. It's now impossible to use without burning myself when trying to remove the lid.
Definitely wouldn't recommend