In After Effects 6.0, the Paint tool has been greatly improved todo give the end user more options when creating animated masks, rotoscoping, but the biggest drawbak todo the current versión is the inability todo use or create your own custom brushes a la
Adobe Photoshop. Combustion 3 wins the painting category hands down as you can manipulate, change, import, and use your own brushes. To put the icing on the cake, all of the brushes are resolution independent, Vector based, and can be keyframed.