I did all of our windows except the lower drivers side slider and the passenger door with a "black out" tint (98%). The tint was a residential tint from Gila, purchased from Amazon. From the outside the windows are pretty much blacked out. During the day we can see out. At night you can see inside the coach if there are lights on.
We haven't noticed any issues with reflections, but we don't drive much at night.
The residential film was very easy to work with. It is a wet application and Gila sells an application kit with the soap solution and tools for 6 or 7 bucks.
I tinted the passenger side door window with an auto tint that is legal in AZ. It knocks down sun glare, but looks really crappy and it was a pain to install. Another issue with auto type tints is the film comes in smaller sizes - not suitable for class A size windows.
Al & Sue w/T-Bone & Rosco
Go Devils Bus, 1994 8.3 Cummins, Spartan Chassis