Why I use Mendeley over EndNote and Zotero for Reference Management

I use iCloud+iPad to organise the papers I read; it's handy because of iPencil. Then, the days came that I had to import citations to the report; iCloud does not have this function…Everyone around me recommended Zotero. I did some googling and decided to mainly use Mendeley and Zotero for a smaller portion of papers. I care about the six factors listed below, especially the…