I have the PIAA superwhites also, and I would have to say I was somewhat disapointed in them. The funny thing is I had a set of crappy $25 APC bulbs that were much brighter previously.. although their quality was crap and burnt out in a few months.

The thing is, my PIAA bulbs are rated as DOT approved whereas those APC's were not. I think brightness is one thing and quality is another. I think that in euro spec headlight assemblies it would be really awesome. They are brighter than the original Sylvania silverstars that I tried, and they also have been lasting a good while... but then again for $70 they should...

__________________
-Kevin