The basic workflow of Netbeans is much smoother and more reliable; little things like ^X to cut current line work properly. It's also simple enough to understand what it's doing.
otoh, Eclipse has the emacs quality of being a platform in its own right; some people swear by that.
Edit: I've changed my mind, on coming across HyperAssist: https://bugs.eclipse.org/bugs/show_bug.cgi?id=159157
Quite simply, the HyperAssist plugin fills in the missing piece that kept Eclipse from the gold medal; with it, Eclipse is the best IDE I've ever used.