From the luminosity ago I would say is true, the specified performance almost (if you people now as 30 watts or 35 watts, I would not exactly take), so they are much brighter than my previous 20 Watt lamps.
Is hervorzugeben positive that the light scattering is very good, you have these bulbs is not such a hard bright / dark transition as with other LED MR16 lamps, really good, and the emission of the "normal" dichroic reflector lamps is absolutely equal to 40 ° n.
The brilliant color is very good, things appear uniformly illuminated and brilliant, you do not have unnatural color effect per se.
The only drawback (and that's why only 4 stars) is that the lamps while "warm white", ie very close to the halogen light lamps (I would say even in mixed operation with halogen compatible), use but "yellowish" appear in pure LED, with blue strike (as if you painted over a bluish light yellow). Also you notice a slight shimmer (such as a 50Hz flicker), if one is very emfindlich.
With us in the bathroom I do not mind, rather just that the light is immediately there, and no sooner gentle terms as halogen. But that is not a product defect in itself, due to the system, so to speak. Now I'm just abruptly awake ...
After the bulbs are super bright, I have the same bulbs again ordered and also changed the bulbs in the kitchen.
CONCLUSION: Very bright, and if you do not need "ambient lighting", absolutely fit, then a very good substitute for traditional bulbs. In the living room I'll still have to look for, on the one hand, because there I (still) more -dimmbare- light output needed, and as a more natural light wish.