I liked kbin.social a lot. It's a little rough around the edges, and doesn't have a ton of users, but I found that that's actually very ok. It reminds me of Reddit 10 years ago. Nowadays every thread in Reddit is either stupid memes and the same predictable jokes over and over, or some fanatical social wars stuff. Kbin looks like a place where you can actually have a conversation again, without being banned or destroyed for disagreeing even if done rationally and politely. I hope it survives its technical challenges.