PB Swiss, best by miles!
I have some Wiha, but have relegated them to general workshop use since I've owned PB.
The Wiha are good, but take a close look at the tips and you will see the PB are in a different league as regards the standard of machining and finish. PB are harder and stronger too. The only time I use the cheaper ones is if I'm working with crappy screws!
Next contender would be Facom. Their drivers are lovely, better finished than Wiha, and have the best designed handle! As far as I'm aware they are still French made!
The only Snap On ones I've seen of late are Spanish made. Nothing wrong with that, but I'm not paying Snap On money for a tool I can get for half the money!
There are many other contenders. I have a set of CK in my road box. German made and pretty good! They weren't much money either!