[drewda]

I've been a regular user of Mendeley, not for recommendations--that's what journal TOC alert services are for--but just for managing my bibliographies and preprint PDFs. I'm allergic to Endnote and I got tired of Zotero's sluggish speed (not that I've tried using it in a few years). Mendeley has been a nice replacement.

(All that said, I really do hope Zotero does well, since it's open-source and not owned by a major commercial publisher.)