I am currently using Pocket and Pinboard in parallel: articles / websites that I want to read later are sent to Pocket (untagged), websites that I might want to get to back later are tagged and sent to Pinboard.
While my archive on Pinboard works quite well I am very disappointed by the support. Either the developer does not answer at all or months later. Not acceptable for a paid service.
While Memex looks interesting having no API makes it a pass for me (for now).
[0] https://getpocket.com/ [1] https://www.instapaper.com/ [2] https://pinboard.in/