I've not found any Pages or Communities that were worth the effort. And however fast you page, you still end up viewing close to one item per page, which is ridiculous. I want to see at least 10, preferably 20 or more. (Worse, G+'s endless pages mean you never get very far down the stream even if you try.)
I can scroll through my stream pretty quickly. j/k keys work great.
Reddit isn't a good substitute for anything I already use. It augments them. Google+ is the same, it augments the things I already use.
A unique attraction for me is that when I +1 something, and later Google Search, I can find my own +1'd things very, very quickly. That's a completely unique feature.
Try to find anything you ever saw on Facebook or Reddit, for comparison.