i used PIAA. didn't like the look for the money. i had the stock in one side and the piaa's in the other. barely saw a difference. our headlights have that damn projector thing on the front so I think it doesn't make it look as good.
Yep do the H9 conversion. It's easy, cheap and safe for the wiring. You can always do something else later on if you're still not happy.
Stay away from any of the blue-tinted bulbs, they will give you less real light output.
Of course the above assumes that you are actually looking to improve the performance of your headlights and not just bling 'em up.