from my personal experience with bulbs ...
OEM - good for visibility ($20 per pair)
SilverStars - brighter than OEM, but still a bit yellow ($50 per pair, before rebate)
PIAA HyperWhites - definately white, but not worth the ($80 - $100 depending on bulb blends)
if you truely want the best and brightest bulbs, go with HIDS. you can easily find a slightly used pair on message boards for only $250 - $300