The offer is big and all manufacturers are waiting with different price ranges and product properties. For this reason I have exclusively concentrated on the brightness and am relatively quickly came across the Philips Bluevision. All additives that indicate xenon like to Xenon or I iris ever categorically as a Haogenlampe this will never succeed. The brightness was described as good or very good, so I just tried this product and lo and behold, the lamps are actually much brighter than standard lamps that were installed previously. My wife is for 1 year and more than satisfied with the luminous efficacy and that the lights will not last forever, since they are much brighter, and each should be clear. So far so good, the lamps you can buy with a clear conscience.