I'm looking to buy a flashlight/torch (or build my own even if that works out cheaper), and am looking to take the following into consideration:
- Good battery life (LEDs would probably suit best in this regard)
- Takes rechargeable batteries of common size (so AA, C, D - some don't seem to)
- Rugged (when used for hiking / backpacking, you don't want something that might just give out!)
- Bright (I'd like this thing to be bright enough for night walking - say at least 150-200 lumens.)
Is there anything else I should consider? And would you recommend purchasing one, or building your own in terms of value for money (and considering I'm comfortable with electronics?)
I'm mainly looking to use it for night hiking and night geocaching.

