Rojo was a pretty nice UI, but I always had a nagging suspicion it was showing me only a small number of my feeds. I finally got time to check on that last this morning. I loaded Liferea (Aristotle's suggestion) with the same feeds list I used for Rojo. I found numerous feeds with recent entries, which Rojo wasn't showing me. The worst part of it is that Rojo wasn't giving any indication that it was having trouble with some feeds (I did notice that the number unread in the left hand bar didn't match the number in the folder newspaper view, but I could never figure out how to get at exactly what that meant). Liferea is a bit clunky, but at least I don't miss entries using it. I guess I'll use it until I find something better.