Glad you are happy with them, but I just want to clear up confusion for anyone else.
1) Total lumens is like a real dyno plot on a motor.
2) Whiteness, color temp, apparent brightness when you look at your headlights, or look at their light pattern against your garage door, are like, not even the butt-dyno, but more like trying to tell how much power you have by how the exhaust sounds.
Lots of people will testify to the "benefits" of one light or another based on their own experience, but the thing they don't have is that dyno plot, the measure of total lumens.
Real HID looks blue/white (really more purplish white) as a side effect, but puts out an amazing volume of light (big HP, much of which is not apparent).
By copying the glare and dazzle characteristics of HID, the blue-bulb guys are trying to copy the look of HID, but the end result is like, well, putting 30lb 19" wheels on an underpowered car. Great looks, but less go.
Well, more accurately, it could actually be more go than your stock halogens, but it won't be the max go available. For example, the Sylvania XtraVisions are supposedly about 20% brighter than stock bulbs. To make the "White" bulbs, Sylvania adds the filters, reducing the available light output, but the end result may still be, say, 5-10% brighter than stock (but I don't know this number). So, it's possible that they actually do put out more light.
Ironically, though, you could get even more performance from the cheaper, non-filtered versions.
