I installed the OSRAM Xenarc 66240 Cool Blue Intense (CBI) D2S 5,500K HID bulbs last week (before Friday) - which are powered by the OEM Infiniti Matsushita ballasts, and have been using the CBI bulbs day and night in conjunction with my Morimoto 3Five H11 4,300K fog light bulbs that I have used for 23 months. Simply, I absolutely adore the CBI!
The CBI emits a very bright, sharp, and daylight white light, the Morimoto XB 4,500K D2S' bulbs are yellow and duller in comparison. The Q50 emits more of a bluer light, around 6,000-6,500K in color to my eyes.
The CBI's light throw is farther than the 2015 Q50 LED headlights and the Morimoto XB 4,500K bulbs.
The CBI's light output is just about as bright as the Q50's brightest hotspot, but makes it up with an overall farther and at least just as wide output. The XB by comparison is not as strong, and may be more fatiguing as the light is not as crisp and sharp as the CBI.
The CBI's beam width is exceptional. The CBI's stellar bright and white light spreads 4 lanes wide, each side. The Q50 has a wide beam as well but does not throw the light nearly as far as the CBI. The XB has a more narrow beam than the CBI or the Q50.
If you are not happy with your current HID bulbs, or want an upgrade and want the whitest light possible, the CBI should be on your very short list to purchase.
Here are some photos from my trip to Las Vegas, and the CBI's beam emitting from the parking structure walls in Nevada and California:
Before the CBI install - Morimoto XB D2S 4,500K after about 40 hours of use - still too yellow in color for me:
OSRAM Cool Blue Intense Xenarc Xenon D2S 5,500K:
OSRAM CBI D2S 5,500K - With Morimoto 3Five H11 4,300K fog lights on
OSRAM CBI D2S 5,500K - With Morimoto 3Five H11 4,300K fog lights on - Wide beam
OSRAM CBI D2S 5,500K - Without fog lights on
OSRAM CBI D2S 5,500K - Without fog lights on - slightly different view
OSRAM CBI D2S 5,500K - Without fog lights on - Wide beam
Parked - OSRAM CBI D2S 5,500K - Beautiful daylight white light - Parked at structure
Parked - OSRAM CBI D2S 5,500K - Beautiful daylight white light - Parked at another structure