[Doug I]

I've put them in my drop lights - and they survive the drop !!

I used to go through bulbs often - every bump of the light and the old bulb would break the filament. I replaced a std. bulb with a CFL and a while later the spring clamp slipped and the light hit the floor. Dented the rim of the light but the bulb survived and is still in there now months later. I changed all my drop light bulbs to CFL's and I've not had to replace one since then.