What makes them so amazing?
The Osram Cool Blue Intense (CBI) offer more lumens than industry-standard lamps, but with a higher Kelvin rating of up to 6000K.
Osram's CBI bulbs broke all the rules when they produced more lumens than a comparable 4300K bulb while offering a whiter 5500K light output. But now...they've done it again with the Cool Blue Advance, and replaces the Cool Blue Hyper bulbs from 2016. Even more light output compared to the Cool Blue Intense, but in a 6000K version.
The Osram Cool Blue Boost bested the CBH, CBI, and standard by a solid margin. These things are simply the best & brightest bulb that Osram currently makes for use in your D2S headlight! (CBB = 460 Lux, CBH = 415 Lux, CBI = 340 Lux, Standard = 315 Lux). Osram rates these bulbs at 7000K, which is actually quite blue...but we found the CBB to have no more "blue" color to it compared to the CBH (which they rate at 6000K) and/or the CBI (which they rate at 5500K).
Whereas most bulbs lose lumens when their Kelvin rises, Osram still manages to give users the benefit of brighter light combined with whiter light - the best of both worlds indeed!
The old Osram XNB (standard Night Breaker) was touted to have "Up to 70% more light output" compared to a standard bulb. The XNL Laser? 200%! Thanks to the most modern technology and some crafty physical changes Osram made to the focal position of the bulbs, they've really pulled out the stops on low beam performance!
So you're considering a fresh set of bulbs, are you? Well if you A) don't mind the price, and B) want the brightest possible option, then these are right for you. Put differently: They are for the dude whose serious about driving in all-weather conditions and only buys the best parts for their car.