My opinion is that Easy does more harm than good in the case of WordPress. It puts it on another server where you don't have FTP access. Without FTP access, you can't install custom themes or plugins. Easy gets updated by Support when there's a new version.
Advanced mode lets you add custom themes and plugins. You can set the panel here to auto-upgrade WordPress when new ones are available.
I have always used Advanced mode, and then used the WordPress built in update system for keeping it up to date.