Prelude includes and sets up the automatic activation of helm, projectile, ido, magit, and a fairly standard set of modules for languages like ruby, python, c, rust, js, css, html, xml, shell, scheme, (haskell, latex, erlang... etc etc)
If you have these set up already, and like the way you have them set up, don't switch. Instead, consider whether you'd benefit from crux, which is where they moved all the formerly unique-to-Prelude stuff: