Nightbreakers give fantastic illumination, but do have a shorter life – it even explains that on the packaging.
Well. Yes and no, there’s the theoretical life limit which is generally shorter for higher powered bulbs, but when you’re talking about premature failure that doesn’t necessarily come into it, what you’re looking at there is resistance to vibration, cold cycling, possibly out of range voltages and the like.
My motorbike is basically a nightmare of rattles and vibrations, dodgy electrics and diy rewires and that tested bulbs pretty hard, I never had another brand last out a winter, whereas the only time i lost a nightbreaker, I also left half the headlight lying in the road 😳