Here's my Marvin printed (in ColorFabb Silver PLA) with Simplify3D and Slic3r respectively. Simplify3D does a MUCH better job. The randomising of the outliner start is causing somewhat of a more "messy" look in the easy layers in the Simplify3D print, but other than that it looks really neat!
One problem I had is with Marvin's belly and bumm... When it's printing this overhang the thin layer simply curles up. This disappears after 10 layers or so. Slic3r had this problem too, but it was worse. How can I prevent this?