I have been a longtime Petzl product user and fan. I have depended on their helmets, harnesses and headlamps for 20+ years. I have purchased pretty much all of their headlamp models as they have introduced them and then each of the subsequent upgrades to those models.
Up until now I have been using the Tikka XP2 which was the best yet but there is a new Tikka and they just call it the XP. The form factor is more austere than previous iterations. There are no flip down or sliding lenses, there is only one button that controls three built in LED lights (two white, one red) arranged neatly on a rather benign looking flat face. This new Tikka XP is lighter and thinner. The headband is a touch wider and seems to rest more comfortably on my forehead although most of the time I wear it fully extended hanging around my neck.
You can see from the information printed on the packaging what the official stats are. 120 lumens on high with a momentary boost to 160 is pretty good for something this small. Bottom line to the user is that the beam is better in all modes and it is significantly brighter while at the same yielding more efficient, uniformed performance from the batteries thanks to some microchip wizardry.
My opinion is that the new Tikka XP is an improvement over its predecessor which was outstanding. The best aspect as far as I am concerned is that the aural rings cast by the beams have been eliminated. Those were not a deal killer for me but they were mildly irritating and I am glad they are gone.
However, I have noticed a couple of nit pick items worth mentioning. The light housing seems less robust than I am used to from Petzl. I know they are trying to shave weight but I hope they have not gone to far to the wispy side of the spectrum. Also, the tension or resistance in the head pivot hinge thing, I don’t know the technical name for it, is too light. If I step down hard ie trip or jerk my head down abruptly the angle changes and the focal point of the beam slips down below where I had it set. Minor but not the level of quality I expected.
BTW, the circuitry is IP X4 water resistant and NiMH or Lithium batteries are approved for use. Oh, one more thing. You might actually give the instructions a quick once over to help with the button/mode sequence.
To keep you out of hot water with your significant other, tell her that this does not go against your annual gear acquisition budget as a new purchase. It is just a technical upgrade of safety equipment you already had. And let me know how that goes.