If cost considerations are set aside, what do you think is the 'Best Eye Protection for Brazing'?

Matters of Interest
1. Sufficiently safe IR/UV protection
2. Orange glare (flux induced) filtering
3. Clarity of the puddle with the flame on the work
4. Flip Up/Down type attachment for clear shop eyewear
5. Glass preferred over plastic

Also, are the common auto-darkening welding helmets fine(safe/effective) for use (if their bulk/weight are ignored)?

Thanks