[Available again! - BLF special edition light] new Sofirn AAA twisty high CRI 5mm LED

It does depend on the magnet though, some stick better than others. I coincidentally bought a batch (3x5mm) that makes the C01 easily stick in all positions.

As I mentioned earlier, not many are able to measure the strength of the magnetism of these magnets, so sellers get away with everything, so in good ol’ chinese tradition everything is indeed what they sell. In Europe we have supermagnete.de, not that more expensive than Fasttech or Banggood, that makes a point of actually selling what they claim, and I have never got bad magnets from them.