I installed Silverstar Ultras maybe 1.5 years ago. The driver side burned out recently. I don't drive the suburban much anymore, especially at night, so I'd be surprised if that bulb had more than 100 hrs of use. Pretty pitiful life.
Put in some
LEDs from Amazon as a replacement since they cost the same and claim better brightness. Just put these in an hour ago so no night driving yet, but I'll try to follow up later.
Initial thoughts. They seem well built - lots of aluminum and they feel solid. Install was just as easy as the halogen bulbs. The brightness claim (20,000 lumens) is complete BS - it's laughable. Just staring at them in the day the Silverstar Ultra seem brighter. From an aesthetic perspective, I'm not a fan of the color - it's too blue. Hopefully this doesn't impact visibility. They don't seem to have excessive glare either - no worse than the halogens.
I did find this video helpful. He didn't mention these "Sealight" bulbs I got but the design is adequate, albeit there's no fan (so cooling is limited).