What's the difference between Rail's AssetTagHelper and Scott Becker's AssetPackager?

I want to compress all my js and css files for a project and bundle into one file (one js and one css file). Which one do you recommend for a Rails 3.0 ou开发者_开发技巧t of http://api.rubyonrails.org/classes/ActionView/Helpers/AssetTagHelper.html and http://synthesis.sbecker.net/pages/asset_packager and why?

I recommend using Jammit from DocumentCloud (if you don't know DocumentCloud, they are behind some very good open source projects like Underscore.js, Backbone.js...) :

http://documentcloud.github.com/jammit/

See the docs for the features, it's very powerful...