Godox V1 is the best choice.

The Godox V1 is a versatile and affordable flash featuring a round head design that provides soft, even lighting. It supports high-speed sync up to 1/8000s and offers a zoom range of 28-105mm. The built-in 2.4GHz wireless system allows for easy integration into multi-flash setups. However, it has a lower guide number compared to some high-end alternatives and lacks an option for an external battery pack.

I've been using theGodox TT685IIS with my a7R IV for about a year now and honestly can't recommend it enough for the price (~$110). TTL works flawlessly with Sony, HSS is reliable, and the recycle time is impressive for a speedlight in this range. The build quality isn't Profoto, but it's held up to regular use including some outdoor shoots in light drizzle. Best value option I've found.

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For Sony a7R IV users seeking affordable flash options, the Godox V860III-S and Neewer Z1-S are viable alternatives to the Sony HVL-F60RM2. Both offer TTL, high-speed sync, and wireless control. Prioritize features like power output, recycling time, and compatibility to balance cost and performance.

Designed specifically for Sony cameras, the HVL-F28RM is compact and lightweight, making it ideal for on-the-go shooting. It offers a guide number of 28m at ISO 100 and a zoom range of 24-50mm. The built-in wireless system facilitates quick and simple setup. While it provides reliable performance, it has a limited zoom range and lacks an external battery pack option.

Facts.