For the Fortuner:

I had Solar Guard's "Super Black" installed for the side windows and rear windshield. This film is quite thick so the installers couldnt do a one piece for the rear windshield. It is not 100% stealth bec. you can still see people inside if you squint through the glass or at certain angles.

For the front windshield, Quantum Magic Super Black was installed so that it wouldnt be too dark when travelling at night.

Anyway, the reason I opted for the SolarGuard and Quantum is because of the positive posts/reviews regarding it esp. from those who installed the tint on a similar vehicle as mine. It is also cost less than 3M and to me, 3M tints are a bit overhyped.