[eluser]BrianDHall[/eluser]
I personally use PhpED now, and I love it. I used EditPlus before that, and I still keep it for old times sake
I like the integrated debugger, though you need to make a couple of tweaks to get it working with CI. I thought 'who needs that, I use var_dump'...and wow, what a difference something so simple as debugging can make.
Now I drop a DebugBreak(); call where I want to bring things to a halt, and I look through the value of every variable if I want and walk through the code line-by-line and I can't say how much time this saves alone. And CTRL+SHIFT+S to upload to your server of choice, SFTP integrated (which is a big deal for me because for PCI compliance I had to disable ftp functions as 'unnecessary and insecure').
The one thing I don't like is it has built in support for CVS - but not SVN, and CVS is so 90's. Oh well, it was very easy to install and configure I found, which I found not to be true of Eclipse when I tried it. I had so much trouble getting the others I tried setup and working right, but PhpED just works, so its worth the price for me anyhow.