I recently got a Godox V860C flash and a Godox Cells II trigger.
Now, I want to do a bit of portrait / glamour / fashion photography -- and I need recommendations on a light modifier. I got the trigger because I want to shoot with the light off camera (but not absolutely necessary). To shoot off camera, I was thinking of getting something like http://www.godox.com/EN/Products_S_type_Speedlite_Bracket.html.
I know the answer to my question is going to be very subjective, but here it is: what is the most versatile light diffuser to have with one speedlight and shooting for portrait / glamour / fashion? Portability would be a bonus. Shooting will be done indoors and outdoors.
Should I just get a big umbrella (shoot through/bounce)? A softbox? Or forget shooting off camera and just get something like Gary Fong's Lightsphere?