Vreihen, that effector/mount looks good. I would have to redesign it a little for my 43mm rod spacing and magnetic attachment but if I ever feel he need to a) auto bed level and b) regain my full print height it's a great way to achieve both. As far as PLA goes, take a look at my Thingiverse page (http://www.thingiverse.com/thing:210028) I've posted some images of prints I have done. The sculpture of the female torso was done with the E3D.
Andy
Andy