Advantages: No extra lib needed, PNG exports possible, wider version support in desktop FF, Chrome and Opera, and wider version support in native Android Browser.
Disadvantages: Isn’t supported in IE8, more complex than Raphaël.
Desktop support: Firefox 2.0+, Safari 3.1+, Chrome 4.0+, Opera 9.0+ and Internet Explorer 9.0+
Mobile support: iOS Safari 3.2+ (iPad, iPhone 3G, and up), Android Browser 2.1+ (Éclair and up), Chrome 18.0+, Firefox 15.0+, Blackberry Browser 7.0+, Opera Mobile 10.0+
Disadvantages: The lib is quite big (89 Kb, 31 Kb if Gzipped), no native Android Browser support for SVG in versions 2.1 (Éclair) to 2.3 (Gingerbread) – (needs a shim)
Desktop support: Firefox 3.0+, Safari 3.0+, Chrome 5.0+, Opera 9.5+ and Internet Explorer 6.0+.
Mobile support: iOS Safari 3.2+ (iPad, iPhone 3G and up), Android Browser 3.0+ (Honeycomb and up), Chrome 18.0+, Firefox 15.0+, Blackberry Browser 7.0+, Opera Mobile 10.0+