I chose it between a snap-on headlamp lens. The truth is that I couldn't wait for the Nu43 because it was my first choice, but unfortunately it hasn't arrived in Greece yet.
Not that I have any issue with the nu33.
Flawless in every aspect. The 700 lumens are quite satisfactory for outdoor use, even for patrols where I want a bit longer distance. Not to mention for use inside the camp and short distances in warehouses, etc. However, in an open space, I would prefer the 1400 lumens of the Nu43, without meaning that the 33 doesn't do an amazing job.
Immediate access to the red light for preserving night vision, immediate access to the 6 lumens of adjustable light that doesn't bother anyone and is PERFECT for reading a book. The second level of adjustable light does a great job for indoor use, and then the remaining 3 levels of focused light like all the other headlamps.
Impeccable battery life and very good lock function to ensure that when you need it, it will have battery.
A bit pricey at 60+ €, but when you buy Nitecore, you are sure about your choice.
I would like a small case, to be honest. I keep it in my bag and I wouldn't want it to get scratched. Just a detail...
Update: The NU43 has arrived in Greece. After almost two months of living with the NU33 and without any complaints about its performance, I will proceed with selling it and then buying the NU43. I am really interested in its double lumens. A small sacrifice for the extra size...
Update 25/06/24:
I still have the NU33 after all. No one was interested in buying it, so I couldn't proceed with buying the NU43, and until today, I have been using it for my work without any problems. I regularly use it for running. There have been several times when vehicles from the opposite lane have stopped, obviously thinking that a motorcycle was coming! Quite powerful...
Meanwhile, Nitecore has released many new headlamp lenses. The only one I would change the NU33 for now is the NU53, which costs an additional €25 (total of €85).
Of course, many words for a headlamp.