GreatNews will offer several built-in display styles for you to choose, ranging from Newspaper which carters to natural reading habit, to Brief which can offer quick reads to those in a hurry, to Firefox Sage for Sage lovers. You don't tear newspaper into pieces to read them. Why should reading rss news articles be any different? GreatNews is optimized for full page reading, so you can scan through rss articles quickly. Combined with functions like "Open Next Unread Channel", you don't need to waste any time to find where all the unread articles are.
GreatNews is extremely fast. Even with hundreds of rss feed subscriptions, GreatNews's response is always instantaneous. You can opt to show news from all channels on the same page. And you have full control over how many articles can be displayed at once. GreatNews takes care of pagination for you.