In the quest to find the perfect wax, I tried this Nanox wax as well - reason being that it is in my favorite category of all-temperature waxes and because it is being sold by sidecut.com - they make some cool stuff, so I figured it's worth trying.
They only make three types of all-temperature wax: training wax, racing wax and an overlay. It is naturally comparable to the The Hertel Ski Wax since these are the only all-temperature only systems I know, with similar easy application instructions.
I bought some training wax, about 600g for 60$ and 250g block of their race wax for around 90$ - comes in a nice package!
The training wax is a hard wax - very similar to the Hertel Super Hot Sauce. In fact is also similar in the way it goes on the ski as well... except it is a harder wax and requires a bit more work to melt in and results in a hotter ski. Not a big deal, but worth mentioning.
It is also harder than the all temperature wax from RaceWax. Make your life easier and scrape most of it while it's still warm (the manufacturer recommends it as well).
The race wax is gray, sort of implying some graphite or molybdenum content. Also a hard wax, harder than the Kuu green cold wax for instance, about the same as the Racewax FluoroMax cold with molybdenum.
Also similar to the Hertel Racing Wax, it is nicer to work with though... It doesn't seem to have such a high fluor content though as the Hertel... i will try it some more later.
In brief, I like the Hertel better for training, since the Nanox doesn't last much longer. Since I now have a bunch, I will use it in colder temps, say -15 and under. For racing, the Nanox is easier to use, but it is twice as expensive as the Hertel, so it has to really impress me on snow, to buy again next season!
Update, after using it quite a bit. It is a good wax with good consistent glide in all conditions. Not impressed in any specific conditions though - the Hertel for instance excels in mildly wet conditions, but the Nanox retains its consistent glide better when it's cold. It doesn't seem to last much longer though.
I believe the Nanox race wax is better in the cold than the Hertel though, possibly because it's harder or due to the graphite/moly content. I do like the consistency of its feel though.
Will I buy more? Just the racing wax, when I run out of the other racing waxes I have - this is my favorite for racing under -10C, due to the consistent feel in many snow conditions. So, for racing, it's between this and the Hertel FC when it's warmer than -10C. If you don't have time to think or guess, the Nanox is the best bet.