Soledad Theme and WPBakery vs. Visual Composer?

I’m starting to build a site with the Soledad Multi-purpose theme and I’m a little confused: I have read that WPBakery plugin has “replaced” Visual Composer, but I see that BOTH are still available as separate plugins. I’ve tried the basic VComposer and have had problems saving the newly edited layout correctly . . . which one is best to use? (that will enable me to keep the pre-made templates that come with the theme, plus being able to insert custom and new features on a page or post? Am willing to upgrade to full versions) Thank you.

It’s the same plugin. They just changed the name