Other commenters in here have mentioned their readers of choice; I can add mine: NewsBlur.
Turns out RSS is still in pretty common use, as far as I can tell, unless you can point to a handful of sites that aren't using either RSS or Atom.
Invariably, when the topic of RSS comes up, someone laments its "passing", which leads me to ask (again): where is this impression coming from? Is it the mere absence of Google Reader?
Is there a social aspect I never knew about?
I see you mentioned other tools being lacking, but I know NewsBlur, at least, provides all those capabilities. (Not sure about "curating", though; maybe you could define that a bit more? There is the "blurblog", which has its very own RSS feed, which lets you surface articles you like, and there's the "save" function.)