I need to purchase a Canon Speedlite for shooting new home interior and exteriors for a local homebuilder. I would likely use the flash for exterior fill lighting as well. My intent is to pair whatever I get with a Rogue Flashbender or some other type of diffuser. Having said that, am I better off purchasing a 430 EX-III RT or biting the bullet for a 600 EX-II RT?
Also, I'm not a professional photographer. I occasionally need to shoot a few photos in support of my graphic design business, which is why I have this equipment. My current setup is a Canon 70D, which is usually paired with an 18-55 kit lens or the Canon EF-S10-18mm F4.5-5.6 IS STM.