A few years ago, I tested the LED replacement on one of the motorcycles as a toss up between HID and LED. After one year of use, I was sold and replaced them all on two bikes with LED. Still working as bright as day one.
So, this year I bit it and replaced the entire front of the truck, all six bulbs, with LED. No more halogen for me, ever. They begin to dim from the moment they are first lit up.
Experience is what you get when you don't get what you want.
"We'll be friends until we're old and senile,....then we'll be new friends."