I always use OBS Studio on YouTube. Now I have found Twitch Studio and Streamlabs. Are they good or should I stay with OBS?
Stay OBS have it yourself
Use what you can best cope with.
Seen in this way, there's no "best".
I stream very rarely but when I use Streamlabs, I find it clearer.
I personally use Twitch Studios.
I would advise you against Streamlabs. It is easy to use, but there's really a lot to buy.
The product from Twitch is of course also better adapted for moderation, so I recommend Twitch Studio. Please write your Twitch name, I would like to see that.
I'm just switching from YouTube to Twitch, even though I'm generally an absolute amateur, so I'm just setting up my account. When I'm done I can send it to you. Suggestions for improvement are essential.