I much prefer a headlamp for camping. Just about any LED headlamp will do, but I recommend you research Flashlight Reviews for one that you think you'll like.
I also recommend that you take a back up light. I like to use a ARC AAA with headlamps that use AAA batteries and either a ARC AA or a Infinity Ultra with headlamps that use AA batteries.
A headlamp and a back up light are all that's needed for camping.
I like to carry the ARC AAA, ARC AA, Infinity Ultra or even a Photon II on a neck lanyard so that I have a light with me while I'm in my sleeping bag. That way I don't have to look for my headlamp in the middle of the night if I have to go to the bathroom or if I have to look for something. You might not think you need a light for going to the bathroom, but it is real easy to trip over the guy lines for your tent or any number of other things in unfimilar surroundings.
A back up light is also very nice to have if you need to change the batteries in your headlamp in the dark.
I take a Surefire M6 when I camp in bear country, but I haven't needed it and I don't remember if I even turned it on.
I have a couple of McGizmos lights with Luxeon III's driven at 917ma. These would be similar to your Aleph. These lights would be useful for night hiking if you needed to see at greater distance than what your headlamp was capable of, but you probably won't need a light with this much throw. The only exception I can think of would be if you had to throw a line over a limb to hang your food out of reach of bears or in your case what ever varmits they have in New Zealand.
I prefer the A2 over the U2, but this is just personal preference and I know some like the U2 better than the A2. It would be nice if you could get your hands on them so that you could choose the one you prefer. I prefer the A2 because the A2 is smaller in diameter, the A2 has throw with the regulated incandescent and flood with the LEDs. I also like the switch on the A2 better.
One of the things that I like about the U2 is that I can use Pila rechargeable batteries in it.
Don't over look the Surefire L2. The A2, L2, and U2 are all great lights. I also prefer the L2 over the U2. I prefer the L2 over the U2 because the L2 is smaller in diameter and I like the switch on the L2 better.
I think the A2 and L2 complement each other. If you had both the A2 and L2, you would have a low level flood that's not to bright to read with but that is enough light to walk with from the A2 on low. You would have a regulated incandescent for throw from the A2 on high. You would have fairly bright flood that will stay in regulation for 8 to 10 hours from the L2 on low and you would have a really bright wall of light from the L2 on high.
In my opinion the low beam of the L2 is the main beam and the reason to have a L2. The usefulness of the low beam is in the same ballpark as the Luxeon I's of two to three years ago. My L2s have replaced a McLux 3x123/KL1 (gen.1) and a C3/KL3 (gen.1) as my long runtime lights. If I remember right the 3x123/KL1 ran for 7 hours in regulation and the KL3/3x123 ran for 8 hours in regulation. The KL1 and KL3 might have been a little brighter, but they used 3 batteries to run for 7 to 8 hours while the L2 uses 2 batteries to run for 8 to 10 hours. The L2 on low is much brighter than the A2 on low.
I'm rambling
Enjoy your trip and keep us posted on your adventures.