So after building out my m43 system with 2 gx8, 12-35mm and the 100-400 on order, today I sold my very last Nikon mount lens - my Tamron 90mm. I use a couple of dual element filters (like the Canon 500D) and find their performance for "Dangerous" bugs very good. I have GSsimplerelease for stacking when I don't want to use post focus and stack in Photoshop. I can get a used PL45 for about the same price as the Oly 60 and the PL can use its IS with Post focus but the Oly has no stabilization when using post focus. I have a good Manfrotto CF where the head can be horizontal to the legs. But I keep thinking that the PL45 is going to be usable for handheld post focus macros while the Oly won't. Is the Oly that much better for single macro shots than the PL 45 that this decision should be a no-brainer? I image reptiles, amphibians, insects, and Arachnids for Macro.