If you jumped from Eclipse to NetBeans, there wasn't any pain from the different plugin offerings? I don't enjoy installing two IDEs for the same language, but that's what I end up doing, unhappily.
No pain at all. I don't rely heavily on plugins though. The important bases were covered: refactoring, vcs integration, and the usual javadoc/outlining.
Perhaps the only things I missed were getting a method's signature when you hover over it with the mouse, and the live variable value when you hover in debug mode. But these are so minor that I feel if they're not already there and I somehow haven't set them up, they'll be in the next release. But as I said, I get so much more confidence by being able to charge in to my code's runtime and poke around that it's worth it.