Thanks, Neal.
So I would expect the Quest 3 to have noticably better image quality, due to better lenses than the G2 and higher resolution than the Quest 2 (comparable to the G2), it should in total be at least as good as the G2, if not very slighly better.
G2 versus Quest 2:
You may want to check a (free) software named BigScreen. It includes a huge collection of places with smaller or bigger screens on which the desktop is mirrored, and other guests can be invited into these rooms to chat or view content together: classrooms, living rooms, moviehalls. The social thing may be uninteresting, but think of this: mirroring the desktop on such a moviescreen, for example, starting youtube and then have the content maximised to full screen on the real monitor means you watch that content
in moviescreen format in VR. Or this: I play Wreckfest in this way, which ahs no native VR support. Its still 2D, but I do not play on a small montior, but on a screen the soze of a squash field! Visually, that is a game changer, even if just 2D. I do that a very lot via another software, VirtualDesktop, and even watch movies via DVD and bluray that way - on screens the size of cinemas screens.
I think that is absolutely fantastic!
I take from your words that the handling and launching of software and of youtube in the Quest is not overly complicated. I ask from the perspective of my old parents.
And do yourself a favour. Get Eleven Table Tennis. Best and most realistic sports simulation you have ever played, promised. Its surreal how good it is.