I have the Ultras. I put them in, in Feb '09. My pas side is now dead as of as of 12/30/10. I got almost 2-years and around 25,000 miles out of them. Maybe 25% of that was with the lights on but honestly I have no idea about that part.

I don't think they were that much brighter than the stock bulbs - I could tell a little bit but no one else had any idea. They did have a little bit of a wider beam pattern that the stock bulbs did. And while they were a bit brighter I don’t think they carried the light a greater distance than the stock bulbs did. I originally got them thinking I'd save money and wouldn’t want/need to get aux driving lights. After a few weeks of having them I ended up getting a set of Hella 500F driving lights and I'm happy I went that direction.

I can say this – I remember it being a pain in the butt to change the bulbs.

_________________
(Formerly just “scoobysnax”) '04 Liberty Limited - 245/70/16 Firestone Destination AT's, Mopar tow hooks, Draw-Tite Class IV hitch, Skid Row Engine & Transmission Skids, Mopar T-Case & Gas Tank Skids, Extended Breather Tubes, Red Top Optima, Sylvania Silver Star head lights, Hella 500FF bumper mounted driving lights

I recently just got silverstars for my headlights and fogs (Christmas gift from bro ) Definitely brighter and more white.

As far as longevity? When I got rid of my explorer (owned 3 years) it still had the silverstar bulbs that my brother used in his explorer for 2 years without a blow out(that he gave me when he sold it, 1 week after I got mine.)

_________________
2003 Jeep Liberty Freedom Edition
3.7L 5 speed manual
OME 927/948 w/Bilsteins
245/75/16 Goodyear Duratracs