Yeah this is one of those things where quality really makes the difference. If you buy cheap LED bulbs, you'll hate LED bulbs. Buy goods ones, and you love them. The dichotomy is really stark in the overall HN discussion.

Have you had any lifetime issues with these? I bought a dozen and a significant number started emitting warm color while at full brightness instead of just dimmed.

Mine lasted 3 years. (100w equivalent, 3 dim stages built in ("sceneswitch")).

Now I had some flickers in recent weeks but they went away again, not sure what had caused it.

No lifetime issues so far. I’ve been using their GU10 halogen substitutes for I want to say about 5 years

Right up there with the horrible neon light my schools had.