I actually just bought a Petzl Tikka Plus, but have discovered that it isn't meant to be used with lithium batteries… an option I'd like to have for colder conditions or longer trips.
Can anyone suggest an alternative which has the following features?:
– lithium battery compatible
– rechargeable battery compatible (AA or AAA)
– can do "diffuse" lighting
– longest burn time possible
– ideally more than one output level
– as light as possible
Basically I want a lamp that is lightweight and lasts a long time on one set of batteries. Mainly for around camp use, so I don't need to be able to spot a badger at 300 feet with it (though it would be nice!).
The tikka plus quotes a duration of "150 hours" on its economic setting, which is one of the reasons I bought it. Somehow I doubt it would actually last that long…
Anyway, if you have any suggestions that fit the bill please throw them on the table. I've looked through a lot of the reviews on BPL and am thoroughly confused!

