What I have:
BD Zenix (2 led, 1 high output led, 3 AAA)
Petzl Tikka Plus (4 led, 3 AAA)
Princeton Tec Matrix (interchangeable 3 led and "traditional" bulbs, 2AA)
Princeton Tec Solo ("traditional" bulbs, 2 AA)
I use the Petzl Tikka Plus 99% of the time, but will use the Zenix when I really need the extra light. The Matrix is mostly a spare at this point. The solo is my camp light in my cabin in Maine.
I prefer the Tikka Plus over the Princeton Tec Aurora as I've seen the tilt loosen too many times on them. The Aurora is slightly brighter.
Note: I also use NiMH, but will use Lithiums in extreme conditions.