@rufustheduck when I came to mastodon, also, I knew almost nothing about server differences. You should make your own decision, but I'll tell you how I am handling my own choice. I am still on the first server where I started because I have found no reason to complain about it and because I have no trouble finding interesting posted writings and lovely photographs to follow from various servers. If ever I find a cultural or moral rift between me and the server management, then I would reconsider my place in this space.
I like your cat.