Guys, your solution of DOF with Jitter is not very well, because it is a fake screen space effect. I recommend you to use DOF the same as in the render room of 3D-Coat. Idea is very simple. You need lot of frames for accumulation (and for AntiAliasing too, 32 samples are not anough for bright pixels) and move a position of camera arround a point of focus. 3D-Coat has not bokeh effect, but you can made it very easy with this technic!)
The result will be much more better!