WHy is the 2TB 530 not an option ? Price ? If its for the PS5 go for the 850 if its for a PC go for the 530.
Reliability is more important on the PC sidefor the OS and stored data. Currently Sony does not allow the OS to be stored on the added drive. but the saves are stored on the web so if the drive fails all you beed to do is redownload.
If sonly ever allows the OS to be run from the drive I would go with a 530