First one was very meh, kinda simple imo. Although you could change your account password from there, which was neat I suppose.
I think second one was easy to use, and easy to learn for new users. Although then started the toxicity, so towards the end it was just frustrating.
This one is, imo, going to be good. Still sort of learning, haven't had the time to actually look around yet, I've had work the last two days, so I only had to time to make an account and figure out the messages. Now I'm home so might mess with it some more and see what I can figure out.
All in all, first one was probably the worst, but it was definitely old and outdated when it ended. Second one was a good site, but just sort of user ruining experience. I think this one has good potential, and I really believe that this forum is a good start for Gato, and me, because I'll be a good boy on this one.