ok, from what I gather... 3M Tints offer good night visibility. The car salesman specifically told me that the "Platinum Magic" tint had an advantage over 3M because Platinum offered good night visibility. Does that mean the salesman was wrong? We were bothering him with questions late afternoon on October 31, when half his mind was likey already on holiday.

So if I go for 3M tint...

What shade offers a good balance between night visibility and privacy inside the vehicle? I would prefer outsiders see nothing at all inside the car, but not at the cost of hampering night vision.

I'm leaning towards the second lightest shade ("Dark Neutral"), but that's only because the bored salesman claimed it was their most popular shade. I haven't actually seen how light (or dark) that shade really is. The salesman was too uninterested to actually bother showing us what the tint would look like in a car. All he said was that it was rare to find people install a shade darker than the 2nd lightest shade.