I’ve been on quite a few. But I mostly was on lemmy.world but their reliability is low. So I switched to Lemmy.ca who federated with basically everyone. Unlike World. I was on .ml for a while too but left for some reason. I’m also on Beehaw, I like it over there but it’ll never be my home instance mostly because you can’t create communities and they don’t federate with most of the ones I like. Being on Lemmy.ca allows me to interact with World and Beehaw from one account which is really nice. They also have really high up time!
Sync for lemmy let’s you do this.