Benefits of upgrading to 3.0?

[eluser]jonez[/eluser]
CI3 is better in every way. Bugfixes, the core is easier to overload, the native session driver doesn't have any of the AJAX problems 2.x does. I've been running the dev branch in a production environment for months now. About the only down side to using 3 today is if you overload core functionality you have to watch subsequent commits to ensure it doesn't break your changes.