And yes I have a basement full of tungsten bulbs. I started stocking up on them. I buy the HF drop service bulb. I started buying them several years ago. Most bulbs are made to fail within a specific period of time so you have to buy more.
Years ago I had bulbs in my basement. I would loose on average of one bulb a month. I could hear the filament ring when people walk on the floor above. Once I replaced them with rough service bulbs, I never replaced them again. I have since bought HF rough service bulbs for all tungsten replacements.