If all of the Google Reader replacements you've tried are too bloated or weighed down with features, Newsvibe may be a solid alternative. It's fast, free and sparse — which means it's just you, your feeds and your starred articles.
Newsvibe is free to use and free to sign up for. You can import an OPML file (like the kind you would get from Google Takeout) to bring your feeds into the service, although I had to try a couple of times to make it work. Once imported, your feeds show up individually on the left side of the page, along with the option to see all articles, unread articles,and shared articles. Click a headline to expand it down, or double-click to open the article on its site. Star it to add it to starred articles.
That's where Newsvibe's features stop — there's no sharing options, no mobile apps, no browser extensions, nothing fancy. Depending on your needs, it could either be entirely too feature anaemic or elegantly minimal — if you need those extra options, it's not for you, but if you're looking for something simple, fast, free, web-based and available on any web-enabled device, it's worth a look.