I agree that Elsevier is toxic, and wish they didn't own Mendeley. Unfortunately, at least the last time I compared them, Mendeley was way better than Zotero for my personal use and just couldn't use Zotero. The cloud sync and sharing, the lit search, and all were just so much more compelling. I do think its been long enough I might poke at Zotero again and see if its caught up.