★ Maximize speed and reduce conflicts
★ join and compress/minify css and js files
★ move selected inlined and external scripts to the bottom of the body
★ Auto-CDN feature
★ One - jQuery: makes sure you don't run into jQuery conflicts
★ No Mootools: remove Mootools jCaption jToolbar keepalive and all dependencies
►► Extensive customization to disable for user groups, components, page Itemid
+ exclude individual scripts
★ CSS 2/3 full support: @import @font @media relative paths :after, sass metadata etc.
★ CDN Fallback: loads jQuery and Mootools from a CDN and - only if this fails - serve the local copy.
►► Tested with: Joomla 2.5+ - 3.0 3.1 3.2 3.3+
★ Extensions: Jomsocial, Dj-Classifieds, Rsforms, Chronoforms, Jomres, Sobipro, Zoo
★ Templates: Yootheme/Warp,Rockettheme/Gantry, Themeforest, Foundation, h5bp
★ Libraries: twitter bootstrap, yui, dozens of jQuery plugins
So to sum up, good product, good support!