Beter Brighter! bulb for a Streamlight Stinger HP

[BuddTX]

Well, in reading about all the upgraded bulbs from Carley and W/A, I thought I would ask if anyone has any suggestions to upgrade the standard bulb on a Streamlight Stinger HP?

The thing only has an hour run time now, so I would not be interested in going much shorter than that, but 5-10 minutes sacrifice to get a brighter light would be fine.

Thanks all!