I am trying both Mlem and Wefwef at the moment, and even though I select the “subscribed” options for my main feed, the posts I see are different. It seems like WefWef shows me top posts from the day before and Mlem is more current? But I still haven’t figured it out.
I’m guessing it’s due to which other instances they federate with and how recently they synced.
Even more annoying is that one instance might show 4x as many comments on the same post as another instance.