Javascript code completion editor compare

I want JS code completion when using model based library(like Knockout.js)
This is result of a day searching.
Maybe some of contents are wrong.
Please comment to me when you find out mistakes.

1. Eclipse
 - JSDT(Javascript Development Tools) : Can't detect modal based library
 - VJET : I don't understand how to attach javascript library

2. Netbeans
 Powerful auto completion. But it doesn't seems to be support model based library

3.  TernJS with SublimeText2

 Better. Sublime text is free and I like this editor :) But working

4. Webstorm(Intellij IDEA)

 Best. Full supports and good IDE. But it's a commercial tool.