I used to buy the cheap 2-knob ones but they are the cheapest for a reason. After light use, the knobs would inevitably disconnect from the internals. The shop

I used to buy the cheap 2-knob ones but they are the cheapest for a reason. After light use, the knobs would inevitably disconnect from the internals. The shop replaced it for free but my time is more valuable than a microwave, so replacements are not really satisfactory.