From my own personal experience, I think Eclipse is moving forwards in the right direction. Helios and Indigo both feel snappier, and the installation/upgrading of plugins is easier.
I had to upgrade my work instance of Eclipse and even though there were conflicting versions of different plugins, it was easier to resolve than in previous versions of Eclipse.
Some of the other language editors could do with some love (PHP for example) but overall I'm finding my productivity is increasing with the later versions of Eclipse and I have to wrestle with it less.
