Yeah, I have a kbin account as well, but I prefer Lemmy so far, since it actually has a data API and I prefer the web interface over that of kbin (and now we have old.lemmy.world!)
I am test driving Artemis for kbin, but Hariette and her team have an uphill battle until kbin comes up with an API, so development has been slow. Not their fault, of course.
The ace in the hole that Lemmy and kbin have is that it doesn't matter which one you prefer because they can talk to each other. Can't say the same about Squabbles.
I just don't care for kbin's interface. It definitely seems to be a love it or hate it type of thing. I like that Lemmy is trying to be more of a Reddit replacement, while kbin fans seem to like that it doesn't feel like one.
BeeHaw gives me a toxic positivity vibe, so losing them from lemmy.world isn't a big deal. I'd argue that they should not federate with anyone, but I can't tell them what to do.