Use one small project
Create the same small project in each candidate: a few tasks, a deadline, one repeating task and a shared item if needed. Check what remains available without an upgrade.
Plan for changes
Ask how you will export information, move to another account and recover access. Record actual observations and the plan you tested instead of assuming marketing descriptions prove your workflow will work.
Source and scope
This is editorial guidance, not a hands-on rating. Verify current features, pricing and availability in the official listing.