Is there a price difference between the two?
There is no such thing as "cleaner" light. In fact, I would argue the light is more dirty. Here is why. The Crystal Vision have a blue tint. What this means is that some of the light is trapped, so not all of the light shines through. This affects your light spectrum. To understand why this is important, you have to consider the question of what is natural light?XR what's your opinion on the philips crystal vision ultra bulbs? I've these and seem to have a cleaner white lite output.
What is important to understand is that not all bulbs are created equal. Philips advertised their Xtreme Power as being the most precisely wound filament for a halogen bulb. The end result is a bit surprising. While some bulbs may record a higher output in lumens, the Xtreme Power provides a much brighter focus across the entire light spectrum. I noticed that the sides of the road were better lit than with the Sylvania Xtra Vision, which I ran for one year before switching over. Is the price difference worth it? In my opinion, yes.Double the price of the Sylvania xtravision, Sure they might be brighter but is it worth that extra cost? The xtravision is already a great improvement over stock.
You'll get the most out of them with an upgraded wiring harness but you should notice an improvement. These are the real deal.I just installed a set on mine will see how it is really hoping they are real (a lot of fakes out there) bought through a dealer
There is a how-to writeup for it in the how to library. It is an upgraded wiring harness for the headlight bulbs to provide full voltage. The passenger bulb has a 0.5V drop and the driver side has a 0.15v drop roughly, which significantly reduced output. This is caused by resistance in the thin wire GM used.Can you explain more about this upgraded harness you speak of?