Why NetBeans - why not Eclipse? I've got Eclise, too. But, as I promised in this blog's topic, I want to focus on applications not in the major distributions and Eclipse has been packaged by Blastwave for quite some time.
I can't say, which JDE I prefer, Eclipse has got this nice PHP-Plugin, but my machine is a SUN Blade 1000, and Net Beans just belongs here. I am also quite used to work with Net Beans and its predecessor, so I guess, I'll keep using them both.