Using other javascript to increase performance?

I use all available CF optimization + argo.

I’m trying to use other javascript, for example:

  • URI.js (full generated)
  • LAB.min.js (cdn)
  • basket.full.min.js (cdn)
  • instantclick.min.js (cdn)
  • fastclick.min.js (cdn)
  • Minifie-custom.js (full generated)

Does it improve the speed with the following * .js?
Do you have other experiences?
Maybe javascrip is very old, is not it recommended to use it?
(Sorry google Translate:)