Just the other day was selecting HEX bits for my saddle bag toolkit, and had the opportunity to pull my calipers out and compare what i had in the toolbox, i had Facom, Wiha, Hazet, PB Swiss and some other no name (from a Topeak/Wera micro ratchet). I was not impressed at all:
All the brands had no consistency whatsoever within their own native group, e.g. #3 would be showing a good fit, but then the #4 from the same brand/set would have a higher proportional deviation, and so on within the brand/set...
If i was to pic the bits that had a good snug fit and were caliper checked, i would have to cherry pic across brands.
Regarding bit finishing/looks the PB Swiss are clearly ahead even going the full mark on attributing a different colour to each size, visually they are gorgeous.
Only the ones that came in the Topeak/Wera looked like crap, the engagement tip was certainly cuted by a blind dog. Maybe they were using 3rd party bits to drive down costs
. Although tolerances were comparable to all the brands i had at hand. Thats that.
The other brands were visually good, nothing to write home about. Plain professional look.
Although i do suspect that the Hazet bits could have a smidge higher Hrc than all the rest, and in my book that's a main point!
The Hazet bits will promptly oxidate if you show them a glass of water, i believe their carbon content is quite high therefore, leading to a higher Hrc. Wiha claims this higher hardness on their product page, but i have yet to experience this in real life conditions.
So after all this turn off after measuring the different brands, i just kept the PB'S for the saddle bag, because bling matters also. And keept the other ones for workshop use.
On the torque wrench side i use Facom, they're used by some of the biggest motorsport teams and also by some of the biggest car manufacturers in France. I actually don't understand why they don't get mentioned that often around here.
And their guarantee is second to none.