Werner aluminum work platform x2. It is light and sturdy. Put two length wise and can do the whole roof without moving either platform. I have a set of florescent lights on wheels that is rigged with built-in extension cords so don't need the power bar.
I have the Werner, a big thanks to many of you folks here, that I caught one on the last black Friday.
No regrets on this purchase, but as far as it being adequate for my Tahoe, it falls a bit short in height. The hood, yeah, the tops of the sides, yeah, but....
My Tahoe hasn't been lifted, is stock, just slightly larger tires. I cannot reach the center of the roof with the Werner.
I have to get on a 4' Ladder, and hate it, as I'm always worried about slipping, falling, or knocking the ladder into the sides of the body.
For these high vehicles, or like the one Mike P pictured, one almost needs two 6" ladders, and a sturdy Scaffold in between.
Mark