Alimiracle, greetings! In my opinion, Mastodon is much more popular than Diaspora. So, if you want to interact with more people, Mastodon is a better choice. Why not just try Mastodon and see if you like it?
My instance is https://floss.social which is an instance mainly focused on those who love and/or develop for Free Linux Open Source Software. Excelsior!
