The article is NOT out-of-date, and that's not "chest beating" on my behalf.ChristopherWRX said:The article EJ links to is common knowledge at this point and uses good common sense. Using HIDs or LEDs in a "reflector" housing is a no-no because it causes the light to scatter. Using them in halogen-designed projection lights will decrease the output of the light if you use above 5K, which peeps often do to get that bluish light. HIDs can and will work in our WRX halogen projection housing. You may need to adjust the beam, which is relatively easy to do.
Also, add a good set of LED bulbs to your fog lights. Just be sure the leds are facing left<-->right and not up and down and you'll be fine.
As for "brighter" halogen bulbs like the ones EJ suggests in his linked thread, good luck. If you're considering going that route, I'd stick with your standard halogens as you will notice no difference in usable light, whatsoever. Halogen bulbs are weak and ineffective. I've tried all of the claimed "brightest" halogens over the course of several cars and none of them look much different at all. I'll likely get flamed for saying this, because the narcissists on this site will need to beat their chests. I can honestly say I've never been flashed once for my HIDs or LEDs. I've actually driven my wife's car towards might at night on several occasions just to test this for myself.
Anyway, whatever you decide, best of luck!