I go back and forth between Kbin and Tildes, with a toe still left in reddit for a few niche communities. I like the idea of the fediverse, but there are definitely a lot of growing pains that it seems to be going through, and kbin just seemed like the most modern, polished, choice. (plus the devs are much less sus than Lemmy)
Tildes on the otherhand feels a lot more close knit, and more about discussion specific topics rather than being a collection of different communities. I kinda like the smaller size, plus the overall tone there is very respectful, so it's great for more nuanced conversations. This is where I come for my memes and my random conversations though.