As per TSMAX and LS3SS, yes i have the 4300k and they are very nice. Initially I thought "****" when they arrived in a plain brown box. But after looking at them and putting them in they are very good in terms of on road performance. Just like what I have spoken to TSMAX about, they are "natural" white light that projects onto the road. If you looked at your headlights they will have the slightest of slight yellow tint to them especially if you have LED parkers (as per the 4300K rating). BUt honestly 4300k is the best performing in terms of light throw distance, lack of reflection in the rain and off signs and the easiest on the eyes if you are doing big KM at night.
EDIT: the main and biggest reason I went with and recommend 4300k is the OEM/factory look with the performance of high end lights. That slightest yellow tint is your friend when it comes to disguising the after market HID (which technically speaking are illegal). Just my opinions, each man/woman to their own