I've tried both and settled on netbeans. Eclipse has become just too complicated. Eclipse is trying to be all things to everyone and has gotten too cumbersome for me. And while neither is blindingly fast, netbeans seems a little bit faster than eclipse. But I made that decision more than 2 years ago. I'm sure both have changed.
Best Option is Netbeans, for simplicity, performance and lots of useful easy to locate stuff.
The only advantage eclipse had against netbeans is that it have an integrated internet browser, but now
thanks to JD Native Swing and MozSwing, you can have more than an internet browser on netbeans, but a lot of
native Windows/Linux/Mac libraries and components.