I went with the 4300K for the white look... have 6000K on my Vue and wanted the whiter and brightest light for the smart.
Word of warning... do not do the high beams... I did... Bad idea.
It's great if you don't mind the bulbs taking a minute to warm up and drive long country back roads all the time. but if you ever plan to flash someone....
FAIL! 
I recommend the Sylvania Silverstars for the high beams... They are almost as bright as the 4300K HID's, probably a bit brighter than the 8000K's and close to equal to the 6000K's. I'll be installing my SilverStars tomorrow and will have a set of 4300K HIDs up for sale that are only slightly used.
BTW... awesome install pics.... a bit more to it if they are like mine and have the bolt-in mounting brackets. Although you could always add the double-sided sticky.