Series scattering?

I bought two of these reasonably-priced and well-rated by other customers bulbs. My experiences are mixed. As another reviewer has pointed out, I had to cut the legs. But that was not a big problem, and finally fit both bulbs well in the anticipated lamps. I spot each a halogen bulb replaced in a 2-er by a LED bulb. In this way, I had a good comparison of halogen to LED.
After I after installing the first instance I was excited, very bright, pleasant light color, only a very small difference from the halogen bulb in the same spot. Even my wife, who is much more critical in terms of new lamps and color reproduction when I was done.
The disillusionment came after installation of the second copy (lamp of the same type). This specimen only reached a lower brightness, but especially the light color was significantly yellowish to slightly greenish unpleasant. When both lights are turned on Writing (4 "bulbs", then deviates a portion of the illuminated area significantly from the others, a total of impression acts irritating.
Since I ordered two identical lamps and obtained in the same tradition, I have to assume that there is a relatively large variation within series production. I wanted to order after this first test, a larger quantity of identical bulbs, unfortunately the decision has become only more difficult after this test. Had I only tested the first copy, I probably would have ordered a larger number because of the positive impression. So I might try only from other manufacturers.
For life I can not say anything, I noted the date on which I have used the two copies and bring a little book about my various purchases. As Verschleisskandidat possibly comes a relatively large failed capacitor on the back of the module in question; a look at what first gives up the ghost.