I've always loved TypeC but would sometimes go on long breaks because of the site's tendency to go down for days or weeks at a time. I've been more consistent since I returned after those issues were fixed.
I think the site can be slower at times but also more consistent. I frequent INTJforum occasionally, but... it's interesting. It's like a bunch of angry guys who wear fedoras and complain about how unfair the world is to them. I argue things more than I feel like I'm discussing them.
I was on PersonalityCafe for a very long time. I was a staff member at one point. I left because it started to feel too much like a fan forum than an intelligent forum discussing personality psychology. I don't know if the owner still owns it or if it's gotten better. I log in maybe once a year and don't post when I do.