The bad thing about Java-based IDEs is that they're Java-based IDEs

I've always been in love with the "write once, run anywhere" concept of Java applications. It's the performance of such apps in Windows that's always driven me nuts. I've been working with RAD environments meant to speed development, which ironically can crawl on even the fastest of Win32 machines.

I've previously used the Java-based Jext, and I've messed with various IDEs based on Eclipse. While they're phenomenal in their management of projects and working with code, I always wind up using something else because of the lagging performance. To the contrary, my favorite editor, ScITE, runs really lean and mean. Not being blessed with auto-completing of syntax, it works more as a code-coloration application that supports a ton of languages, (X)HTML, XML, CSS, and SQL. And it runs fast. It's the same reason I normally use ASP.NET Web Matrix over any of the versions of Visual Studio (especially VS.NET 2003).

I guess it comes down to wanting more features vs. performance. In what environment can you be more productive?