I read on the internet a lot of these lamps. come Ran well to the 50W halogen in brightness. However, the light color is not perfect. So after I've tested many especially E14 and E27, I can say that so far only the ledare lamps from Ikea a really good ,, as light bulbs make light ,,. But since the GU 10 of Ikea should not be so good (eg flickering) I tested this.
But they are especially for the price already really great. Am satisfied