I’m sometimes using Mbin, but everything that is good about it, is also good in PieFed. It’s been nice that Mbin has support for following Mastodon with the same account you use for following the Forumverse, but since some of Mastodon’s features are unsupported, I still find it more comfortable to just browse Mastodon separately. Quote posts are not shown properly, for example. Also, pictures in comments in Forumverse are shown as links.

I find Mbin much nicer than Lemmy, but PieFed even nicer. For now, at least. Nobody knows if Mbin suddenly invents some killer feature :)