You should try Kepler. Some amazing performance improvements out of the box.
I don't think this means much. It has (poor) support for just about every language under the sun and its free so of course its going to be widely used. It has many features for Java, but features for other languages quickly fall off a cliff. But its the slowness that is a showstopper for me unless I absolutely must go with eclipse. Yes, eventually computer technology will advance to the point where its bloated codebase is no longer a liability, and perhaps we're approaching that. I use the Juno release occasionally for python programming and everything I've mentioned still applies.
Personally I'm not a big fan of plugins in my IDEs: they always feel slow and clunky with a "bolted on" feel. This has been true of every IDE + plugin environment I've tried so far.
I like C# a little more than Java, but I cant stand assemblies. Jars are much easier to handle.
edit:
Troll? Not.
Like a very simple thing: quick watch in debug blocks the edit window? Really WTF?! I have to move it the second screen to see the actual code. I can name a lot of these small annoyances.