I used to use brighter bulbs (Silverlight etc) in my 2006 Sonata (I have poor eyesight, and in particular in the dark, so I needed the extra). On the other hand I also like to keep the low beam lights on always for best visibility (other people seeing me). The bulbs would last only 3-4 months, at $40-50 replacement cost. Ouch.fyi - according to many over on the YF thread, those 'brighter' bulbs don't last as long as normal halogen bulbs. and for the cost, many of them recommend upgrading to HID. they last longer, cost less over time and are brighter. just a bit more work involved to make the conversion. and since we have projector style headlights already, they will work fine.
with that said, my wife has a matrix. she took it in for an oil change few weeks back. the left headlight was burnt out. i didn't know this. anyways, she had them replace the bulb. they installed a standard halogen. the right side has the silverstar bulb. yes, it's 'whiter'. is it brighter, not that i can tell. i have them both adjusted properly...and can't tell much of difference.