I was a bit unsatisfied with the light produced by the stock headlight bulbs in my car, and I'd heard a lot of good things about the Silverstar bulbs so I decided to try them. I stuck them in the other night and took these two pics when I had one new (drivers side) and one old (passenger side) bulb in.
Overall impressions: Not quite as dramatic a change as I expected, but still very good. In the first pic (I'm parked in front of a grassy embankment) you can clearly see that the new bulb produces better and whiter light than the stock one. In the second pic, the Silverstar bulb looks like it's glowing a bit blue, but my camera isn't the best; it's actually closer to a pure white.
Effectiveness: I've only done a very little bit of night driving since I put these in last night, but so far I feel like I can see a bit better. The light "fills" the area a bit better, it's not so patchy. I still need to polish my headlight lenses, though, I think that will help a lot. I'll post back after I've done some more night driving.
If you go to buy these, make sure you get the H7 ST/2 package. I made the mistake of just having the guy in Advance look up the type of bulb for me on the computer, but the only thing they had was type 9005, which is for the high-beams.
Anyone who ever buys used cars online, anyone even THINKING of starting a "Is this deal too good to be true?" thread, anyone who wants to be more educated about protecting themselves must <a href='http://www.carbuyingtips.com/fraud.htm' target='_blank'>read this</a>.
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