I use the spatula + pexpad method, with the super expensive cleaning fluid (pure alcohol?) purchased in a lifetime-supply 2oz thingie from a camera shop.

Works beautifully. I also got sucked into the arctic butterfly gizmo. It works for dust, but don't try it without first cleaning the camera (one time job) with the pexpads + spatula + fluid method, to get rid of the oils. Otherwise the brush just spreads the oils around.

Cheers