emmm. it looks real cool. :D especially if u are along a dark tunnel or open area. i can tell u, it looks real cool. me and my friend who changed to the same bulb went to a dark beach one night. then both of us torn on the plasma spark blue on both cars. hahahha, looked real good.
the light is bluish and not whitish.
the light thrown forward and to the sides are much more than the standard bulb. however, be warned that you might have difficulty driving with it at first. i had difficulty adapting to it at first but later on, it was ok.
i think the bulb is a good option if you are going for looks. the amount of light is nowhere near the brighness of a proper HID though. but if you compare the price of the plasma spark blue and the HID. it is only logical lerrr.
i suspect that mine burnt due to the car's faulty wiring. In fact I have changed 3 pairs of bulbs in this 1 1/2 year old car. And it is always the right hand side that burns.
i also tried the raybrig before. It is less yellow than the normal bulb and the highbeam looks white. It cost me about 180 for that. was real happy with it until it burnt too. so now, osram silverstar it is for me. cheao and bright. :P