I use Eclipse as my primary IDE (cue the IntelliJ fan bois). Over the years my personal install of Eclipse has become bloated and cluttered, so with Helios I thought I'd start afresh.
A pleasant experience. To go with simplicity I chose Eclipse Classic, and have added in all the features I need, rather than have a bloated monstrosity. I have enjoyed the Eclipse Marketplace having a "one stop shop" for those needed plugins.
The result, a clean easy to boot, lean on the memory IDE.