What are the pros and cons of Cisco Umbrella vs. Zscaler SASE for a large global enterprise?

Hi peers,

I work as the Director and Global Head of Network Services at a Healthcare company with 10000+ employees.

Would you happen to have a comparison of the Cisco Umbrella vs. Zscaler SASE solution?  I would be keen to understand the pros and cons of each and what global enterprises are going with and why.

Thanks for your help.