I use Netbeans, I tried a few other IDEs such as Eclipse, Aptana (basically eclipse again), PHP Storm as well as simple code editors such as Dreamweaver (fine for HTML or CSS but not a real PHP application) and Emacs etc.
I settled on Netbeans because it ran well on my old laptop which was a little underpowered and used it on my desktop as I figured I’d get more out of learning one IDE really well rather than a few badly.
I wasn’t that impressed initially but I have actually been really pleased with it over time, works well with xdebug, it’s quite good at helping me put code together, git integration, lots of other “little things”. I think the main thing is, whether you choose eclipse or netbeans or something else, is to take the time to get to know the IDE and how it can help you work better as the best tool you have is yourself. I know that sounds cliche but these tools really are supposed to make our lives easier.
For the record Aptana would be my second choice but I am committed to using one IDE long enough to make sure it really works for me. If I feel it slowing me down or hindering me - I’ll switch.