In my role as purveyor of fine nut-shot videos to frat boys &c, I have been given temporary custody of an iPad with which to test my wares.
The screen is amazingly bright and clear. Truly beautiful.
You get a free book with the iBooks app (fully illustrated, very easy to read on this screen!)
My HTML 5 video player seems to work well.
But, of course, everyone will be using it for something else…