Honestly there's no reason to not use both if you wish. Just like Lemmy instances, you don't have to choose a single one to base your entire online time around you can have accounts everywhere and enjoy it all.

I will say though there has been a noticeable difference in the discussion quality on Lemmy. I don't get this vibe that everybody is attacking me and looking for opportunities to shit on me when posting on here, which is hella refreshing at least.