B&H Tac Visor
The user instructions are counter-intuitive because if you install the visor as instructed, the existing visor cannot be deployed. The daylight portion does not come down low enough to screen out the sun and the night visor is so opaque that nothing can be seen through it. It is like driving blind. I cannot give this visor even one star, since it fails on so many levels.
It does not really reduce the sun light during the day time and it doesn't reduce the bright headlight from the other cars in the evening. If you don't sit straight or high enough, it won't block anything and the dimension can only cover half so the view is weird while driving.
Sun and night time visor
This is really a great product, keeps the sun out and still lets you see the road, the night section helps with oncoming cars headlights and the glare from stores while driving at night in town.