For context, I used to drive a car that had dual visors; my current full-sized sedan does not have that feature, so I figured I would try The ADDVISOR. Since I was spending the money, I decided to splash out the extra $20 and go for the Plus model; as I will explain later, this was an unwise decision. I have now been using The ADDVISOR about two hours a day for two months, and so I feel I am now able to write an intelligible review.
If you want a short summary: a decent first attempt at fixing the problem, but not worth $70 it costs in its current state. (Disclosure: I used a coupon for 10% off, so it was $63 for me.) My initial product received did have a defective mounting point. The company sent me a label to send the product back to confirm the defect and issued me a full refund.
For the full review, I will proceed now. The installation instructions are at least straight forward and easy to follow. You are given two different options for installation: (A) Visor style so you look at the tinted section with the black behind it or (B) Sunglasses style so you look at the plain side and the tinted section is hidden.
When you mount it in Visor style, you will have the tinted plexiglass facing you. On a bright sunny day, like when you would most want to use this product, you will see a perfect reflection of you on the tinted section. If you deploy that tinted section out, you will still see a reflection of yourself. (To be fair, it is not as bad as when you have the solid section behind as you can see from my pictures.) However, with the visor mounted in this fashion, you will not see anything being reflected towards you when the visor is stowed.
If you mount the visor the other way, you get to instead stare at the obnoxiously large The ADDVISOR logo the entire drive. I already know what I bought, I do not need to be reminded about it each way on my hour-long commute. When mounted in this fashion, the tinted section remains visible when the visor is retracted. Similar to the other mounting position, this tinted section will act as a reflector. Often for me, catching oncoming headlights and shining them at me; now I get two sets of headlights to look at me instead of one. Less glare in the daytime, more at night! Deploying the tinted section out in low light/foggy conditions helps improve visibility, and gets rid of the reflections of headlights at you, which I suppose is a decent upshot.
In both mounting configurations, when The ADDVISOR is stowed its placement will block the deployment of your car's visor. If you want to use the factory visor mirror for example, you will need to deploy The ADDVISOR, and then fold down your factory visor to access the mirror. Given the two pivot points on the arm, you can finagle it such that it does not block your factory mirror, but then it permanently blocks the top of your window. I know every car is different, but mine intrudes just below the AS1 line. It also now will require two hands to try to deploy the visor back out when you actually need it since it is hard to move both the arm and the visor at the same time.
In a way, the visor is both too wide and too narrow. Given the problems discussed with storing below the factory visor, I would like to try to store it above the visor. However, if I try to put the visor behind my car's factory visor, it does not fit between the axle near the A-pillar and the clip near the center mirror. If The ADDVISOR were narrower, it would fit. (Alternatively, if the arm were longer, you would be able to get the visor past that pinch point, but it is not.) For practical usage rather than storage, The ADDVISOR too narrow. As the sun moves around during the drive, you will get sun in your eye in the gap between the visor and the A-pillar. To fix this, loosen the cams and slide the visor to the left. A little bit later, you will get sun shining in the gap between the visor and the mirror to the right. Loosen the cams again and slide the visor to the right. The factory visor is wide enough to cover the entire area from A-pillar to mirror, and so prevents this fiddling.
If my complaints were addressed in a future product revision, I would likely try an ADDVISOR product again. I would probably get a model without the tinted portion, but if the arm were made longer and the visor wider... I think it could be what I had hoped it would be in the first place.