Similar plugins – which one(s) to use?

For a new BuddyPress site (non-MultiSite), which plugin(s) should I use?

Calendar:

https://premium.wpmudev.org/project/buddypress-group-calendar

or

https://premium.wpmudev.org/project/events-and-booking

or

use them both together

Email:

https://premium.wpmudev.org/project/mass-email-sender/

or

https://premium.wpmudev.org/project/e-newsletter

Batch New User Creation:

https://premium.wpmudev.org/project/batch-create

or

https://premium.wpmudev.org/project/add-new-users

or

https://premium.wpmudev.org/project/blog-and-user-creator