Samyang AF 50mm F1.4 II vs V-AF 45mm T1.9 for FX3 (video AF?)

I shoot wedding videos on a Sony FX3.

Currently using a Samyang V-AF 24mm on a gimbal, and I’m looking to add a 50mm-ish lens.

Trying to decide between:

•	Samyang AF 50mm F1.4 II

•	Samyang V-AF 45mm T1.9

Main priority is video AF performance (face/eye AF, tracking, smooth transitions).

Video only, mostly handheld + gimbal, weddings.

Which one would you recommend and why?

Thanks!