PhpEd is probably the best for PHP. Komodo is probably with the widest support. Aptana requires JAVA virtual machine, which I hate, but if you don't care you may find it very good, especially that it's free. Of course, Eclipse is a good choice, same "problem", if you go with free and you have to chose between Aptana and Eclipse, Eclipse is better and you can get the first as plugin for the second.
Anyway, I think the answer comes to a matter of getting used with sometihng. All have their pluses and minues, working with one of them is the only way you will find them.
JQuery you said... than I think Eclipse. Also a nice IDE, nice for beginners, comes from codelobster. The thing I like is that it has a plugin for Wordpress (in fact for several other applications, including what you've asked: JQuery), but these are paid.