Hello all! I hope all is well as usual. I just ordered my Sigma ef 530 dg flash and i need a diffuser. What would you recomend? I have seen those small square ones that go over the bulb but i have also seen those huge gary fong ones. The diffuser that would be ideal for me would be in use with portraits and some fill light for when its needed. This is the flash: Sigma - Flashes Any feedback is always helpful. Thanks in advance.