Hi,
Daikon Forge seems to have a complete coverage, I am going to gain more experience int he coming days as I start a new project that will use DK and playmaker, currently I am more oriented with NGUI and for my needs, I have everything I need with the custom actions available on the wiki. 2dtk I think is a bit behind, I may be wrong tho, but don't understimate the power of the actions "set/get property" and "Call Method", you can basically access anything you want with this ( 90%), for the rest, simply make requests on this forum.
bye,
Jean