I have used both IDEA and Eclipse recently. My opinion is that IDEA has very interesting tools, but when viewed as a complete platform Eclipse deliver the best experience. There are some things that IDEA does better than anyone else, but the editor itself is mediocre. For example, the UI is too complicated, and the tabs are terrible to use. The number of plugins is also much smaller than available for Eclipse.

If you are happy with what IDEA delivers out of the box, then it is probably the best for you. Otherwise, I would should just stick to Eclipse because it offers better options in general.