Personally I've never stopped using good old
snownews, which in my opinion represents an acceptable compromise between comfort/usability and lightweight, whereas for a very barebone and minimalist approach you may want to check out
rsstail which I don't mind either.
sfeed is a commendable RSS/Atom parser, easy to couple with a pager or dmenu/rofi.
You can also get a customized RSS/Atom feed digest by mail by using
rss2email