When comparing Cabinet Beta vs Greenify, the Slant community recommends Greenify for most people. In the question“What are the best Material Design apps?” Greenify is ranked 49th while Cabinet Beta is ranked 71st. The most important reason people chose Greenify is:
Greenify even offers battery savings to non ROOT devices, though it may be limited compared to what can be done with ROOT and Xposed.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Material design
Inspired by Android Lollipop design.
Pro Even works without ROOT
Greenify even offers battery savings to non ROOT devices, though it may be limited compared to what can be done with ROOT and Xposed.
Pro Hibernates, instead of freezing apps
Greenify's mane function is to hibernate any installed apps. This allows users to to quell overly active apps that are draining their battery without having to delete them. This can be done with or without ROOT.
Cons
Con In beta
Cabinet Beta is beta software which means there may be bugs or incomplete features.

Con Bloat has started creeping in
e.g. version 1.9.2.8 added an audio player.
Con Greenifying without ROOT has to be done manually each time
When using Greenify without ROOT access to hibernate apps, it has to be done manually each time. There is a widget and shortcut that users can set to their home screen to make this action a bit easier though.
