I started on kbin.world and really liked it, there are several features I much prefer on Kbin vs Lemmy like being able to see the activity log for comments and posts. Unfortunately I wouldn't recommend new users start there anymore. Ernest is awesome but it seems like he's got some stuff going on IRL and he doesn't seem to want to share development responsibilities. He was accepting some more help and putting together a small team so maybe it's gotten better since I switched to lemm.ee but especially back around December and January there were periods where he was absent for extended periods and issues weren't getting fixed until they had some time to snowball into big issues and he was stuck spending more time on playing catchup from that than working on improvements. I didn't try Mbin but it seems like that might be the better choice for the time being if someone wanted to start using that part of the fediverse.