My views on the alternative social networks in more of a nutshell:

Gab
Pros: It's not Twitter
Cons:
1) Fugly interface on the desktop,
2) Proprietary
3) Centralized

Minds
Pros:
1) AGPLv3 License
2) Attractive interface,
3) points
Cons:
1) Beta blues
2) Can be federated. but currently isn't
3) points

The Fediverse
Pros
1) It's all FOSS
2) It's all federated
Cons
1)GNU Social has a lot of technical shortcomings
2) Mastodon run by a faggot
3) Pleroma isn't done