For me, not the yellow of the egg

Anticipating an indication:
The lamps were ordered in a vendor-unnamed package (no-name product) and have even no inscription, would be possible through the identification. It is quite possible that the trader in the meantime the supplier changes and therefore they get another product.

Review:
I bought these LEDs, which are rated relatively well here and appear relatively favorable. They are intended to replace halogen spotlights with me 35Watt.
In my past experience with GU10 LEDs are restricted to 2 copies of the discounters.

Light color / temperature:
The LEDs are advertised with "warm white". That is something in 2700-3000 Kelvin color temperature.
In fact, they are at least not cold white or daylight white. However, they do not reach the comfortable temperature a halogen lamp. Total grad still so acceptable.

Light intensity / power:
In the pack is 3W, 150Lumen. 150Lumen correspond in something of a classic 25W light bulb or a 20W halogen lamp. So initially seem inappropriate to replace my old 35Watt halos.
Indeed, LEDs provide even less visible light than the halogen spotlight. Chill is about 30% losses. But they are also much brighter than the LEDs from discounters.

Angle:
Advertised with 120 degrees-radiating angle. Subjectively, the light-emission is significantly better than that of halogen lamps.

Conclusion:
Used as a substitute for traditional GU10 halogen spotlights these LEDs are not for me. For this, the light output is too little and the light seems a bit too cold.
So I'm still looking for the perfect LEDs.