There is no competition for this TTL Flash system!
If you’re looking for the best TTL flash available today, there is absolutely no competition when it comes to the Sony Speedlight flashes!  If you are looking for a full flash ecosystem for your flash needs, you will have to look elsewhere. My grab and go flash for events is and for sometime to come will always be a Sony flash.
These are the two flashes i recommend the most for Sony shooters.
Sony HVL-F28RM(A) https://amzn.to/4eujOqg
Sony HVL-F46RM(A) https://amzn.to/4li8mRf
Sony FA-WRC1M Wireless Radio Commander. https://amzn.to/4k82vw9