Question about MDM software

Hi, I am deploying 10 ipdads in our fire department. I currently have them setup in Apple Business Manager, with Apple Business Essentials managing by user. Two part question.

1. Should these be managed by device instead of by user, and if so, what is the benefit.

2. Currently I am using Apple Business Essentials, but now I am seeing many other options like jamf that may have better ability to configure the tablets. Would I be better to switch over to that for better management of the devices?

Thanks for any help.