I'm a flash beginner, but after getting used to using my GX7's pop-up flash for fill I think I'd like to upgrade to an external unit. I've been using fill flash mainly for candids of friends and family, indoors and out; I do photograph some artwork and jewelry for my girlfriend though and I've heard flash can help there as well. Reading through some of the threads I'm a little confused by the brands and models of flash, and haven't been able to find a "where should I start" kind of post. My goal is to have the flash not completely dwarf my GX7, and to be able to rotate the head for more bounce flexibility. Should I be looking at the panasonic 360r/olympus 36r? What's the difference between that and the olympus 50r? Thanks for any help y'all can offer!