If your light was pre Cree/Rebel/Seoul, then a change to a modern premium light like the Nova should increase brightness/runtime several times. Modding should do the same.
If you look at these beamshots -
[SIZE=-1]www.fred-flashlights.tacomall.com.tw/5mshot.htm
- then I think, lumenwise, your HDS is in the same league as the E2D, while the Nova should be in the same league as the Huntlight or Jetbeam IIx running 14500's. Big difference!
If it has been a while since you checked on lights, you might want to know that the mid-range lights and lights using single AA sized rechargeable lithiums perform much better relative to the high-end lights now. I've just ordered a $55 dollar LF5 that's a sort of programmable, single AA powered, Surefire U2, and that Jetbeam is about the some sort of price, multileveled, and finger sized. I was shocked by how much things have changed since I last ordered a light - in car terms it's as if the LED production industry managed about 50 years of progress in a single year.
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