I’ve stayed on 3.x also. However, one of my colleagues discovered on Juno that you can switch to the old SWT presentation (which might be Preferences>General>Appearance – but don’t quote me on that), and if you do that, then things are pretty stable. Sure, you lose the styling and the ability to have dark themes etc, but who wants that if it’s buggy. So, try it out; things might not be as bad.
So far as IntelliJ goes, the thing I missed when I used it for a year (v10.x) was the lack of incremental compilation. Apparently IntelliJ 12.x has it – and I even have a free license because of being an Apache committer – but I still prefer Eclipse.
