Light is brighter and whiter than with the plant H7. TüV course had no problems with it, as long as the headlights are set correctly.
For durability, I can say that the (old) Night Breaker good two years held (3 Defective Bulb in 4 years) - and I always get light - even during the day. Since the pear exchange with my Volvo a matter of 5 minutes I got no problem with that.
Just me broke the no. 3 - now have a transitional period, in a headlight again a normal H7 and you can clearly see the brightness / temperature difference. Pay now time to order the new Night Breaker Plus, which promise higher durability me.