I bought the Jahn L4417 6 months ago for my upright piano.
1. The foot is heavy. It's like impossible to tip over.
2. It has 2 separate led lamps and they are accessible, so I guess it's possible to exchange one if it ever fails.
3. You can turn the leds directions individually.
4. Lightning is even, not too soft, not too bright. It lights score and keyboard.
It ain't cheap, but you get what you pay for.