Laptop Screen Privacy Filters

Tried a couple of forum searches and didn't see an answer - so either I did poor searches or the answers not there!

I do a LOT of work on planes, and was thinking about getting a privacy screen. Couple of questions:

I've noticed when folks are working NEXT to me with them, I can't see their screen... But I notice when I'm walking down the aisle, I can pretty easily see the screens of people that are seated.

• Are different brands/styles BETTER at the "don't view from above"?
• Is 3M's the best?
• Is "Gold" better than the "regular"?
• What recommendations on size - buy a little bigger than I need? Buy exactly what I need? Buy a little smaller?
• What else should I know?

Thanks

Is this the kind of solution you are seeking? http://solutions.3m.com/wps/portal/3M/en_US/SDP/Privacy_Filters/
Seems like a good solution to me. Achieved suggestion via a google search on "computer screen privacy film" 1st of non commercial google related sight displayed of 240,000,000 sights in .22 seconds. truenorth

No.

I'm looking for recommendations from personal experience.