My experience has been similar to Gator's. I have several SureFire lights, but all use the P60 lamp assembly. The very first one (literally new in the box) lasted about 10 seconds. I called SF & they sent me a free replacement. Since then, I average about one bulb a year in the C2 I carry & use daily.

Best life was from 12/31/99 (remember Y2K eve?) until about Thanksgiving 2004; that was in my EDC light. The rated life of the P60 is 1 hour. Note that that is of actual, constant use. Intermittent use should be longer.

The E2 series uses a different lamp assembly, but SF's rating is similar: 60 or 75 minutes, IIRC. I expect performance to be similar, as well.

Unless you get the LED, I recommend at least 1 spare bulb in your kit. The SF SparesCarrier (1, 2, or 3--for different models) carry both a bulb & extra batteries. You can also fit two 123 cells side-by-side in a Kodak Advantix film canister. It won't work in the Fuji; it's too small. A spare bulb can also easily be stored/carried in a film cannister, too.

Good luck, whatever your choice.

David