I do a lot of nighttime work, both with flash and with continuous lighting. I often forget which I used after a while, but I have a few suggestions that I have found very helpful.
I highly recommend Lupine Light Systems for their headlamps and flashlights. They are expensive, but unlike any other light I have used. They are made for biking and things like that, but they function extremely well for any night work. I have two lamps -- the Piko which is a small headlamp (still very powerful) and a Betty headlamp, which is incredibly powerful. I spoke to the company, and when they found out I was a photographer, they offered to change the LED's in the Betty to 5000K LED's, instead of 6500 or so, and in doing so they have noticeably better color reproduction. They also put a red LED in the center, instead of the typical white LED. This allows me to have a low intensity light that is easier on the eyes while I am working with the camera, and then still have the powerful beam when needed. I think these changes might have been free, but if they charged me, it was only a nominal fee. The lights are a system, and the batteries are interchangeable and you can buy different harnesses and mounts, as well as a USB adapter to charge your devices or to charge the batteries from USB. The accessories are pretty reasonably priced, and everything is very well made. It seems as though it is mostly made in Germany. They do not have a distributor in Iceland, so I bought directly from the company, and the service was great. They will update old models to new spec for a reasonable fee and so on. The other feature which I have found very useful is that you can get the lamps with bluetooth and app triggering. This can be very useful if you have multiple lights, or if you want to control the time the light is on without actually being next to it and so on.
If you are interested in flash, I have had great luck with the Profoto A1 and B1 flashes. Both have powerful and useful modeling lamps that can be used for continuous lighting as well. Obviously, these are not color critical solutions, though they both have a rather warm and pleasing lighting.
My night photography is rather different than those linked above, but I can post a few shots made by using continuous lighting to fill in the light...still, after looking I see that I do this far less often than I use flash or existing sources like streetlights (did a whole book on them) or lights from buildings etc.