I like the Petzl Zipka because it's just so tiny and light. It's probably not as bright as other lights, but neither is my backpacking tent as spacious as car camping models. It serves me fine, though. It's currently on sale for $27 here: http://www.campsaver.com/zipka-plus-2-headlamp-clearance
X2... I picked one of these up and really like it, now I don't know about long term durability but battery life is true to what they list and at 200 lumens it is plenty bright. I will only take this one where in the past I took 2, one for just night and morning hiking and a brighter one for blood trailing. The weight of this is the same as taking 2 seperate headlamps. I see no reason to have 2 if you vet this. I didn't take 2 to have a spare it was because of battery life and output, the Black Diamond Icon now takes care of all my needs in one package at a cost of $80.
Petzl Tikka XP2 with Core rechargable battery. High and low white spot light with a beam diffuser for a flood, with a single Red LED for preserving night vision as well as white and red flash/signal mode. As a plus, it re-charges off of a mini-USB port, so all I need to do for a re-charge is hook it up to my Goal-zero solar panel for a few hours. Not that I need to re-charge often, it last a long time. I also have a Petzl Tac-tikka that I really like for using at work and blood trailing, as it has different filters (red/blue/green) that can be used over the full-power white light. The bright blue is great for seeing blood and still preserving most of your night vision.
I lost my Petzl Tikka XP2 one night while I was on a 4-wheeler dragging out a deer. The red LED was on at the time, and I had no idea where it fell off at. I didn't even realize I had lost it until the next day. I looked for it in the daylight and never found it. 4 days later, after 2 days of sleet/rain/snow storms, I was walking out from a different stand in the dark, when I saw a red glow underneath the snow. No shit, there is was still on! I became a loyal customer that day.
Good choice, this is the one item I finally was able to recommend to Aron before he could get it seems like an almost impossible task, lol. I'll let him comment on his thoughts but I do know he liked it last time I talked to him and was planning to be a one headlight guy this year also.
X2 on the Zipka. What a great little light. I've been using it 2-3 times a week for early morning hikes up the mountain and in the field; it works great. Another aspect you'll appreciate is the fact that it's so light and small. Plenty bright enough and switches to red with no problem. Battery life is superior.