Basically what my french man cave brain is trying to say, any halogen lamp that cracks and looses it's halogen will never last long, but the filament of the upgrade lamp are stronger, so they last longer, even if the lens cracks. So you have many options to your initial question. For fun, google this. https://documentarystorm.com/the-light-bulb-conspiracy/ I love talking about stuff like this. Makes for a good debate, and why I always say, buy cheap, buy twice.