Tusky is best for those who are newer to Mastodon. Visually it’s very clean, straightforward to use, and largely free of bugs (it helps to have been around for so many years).

For users more familiar with Mastodon, I’d go with Fedilab. Despite a few bugs, it’s the most customizable option, with so many features you can tweak to your own tastes.

So in this case, that does mean that someone with a Lemmy account who is subscribed (from that account) to Kbin magazines will be able to see the latter within the app, right? One wouldn’t be able to login to Kbin, but could view Kbin content from their Lemmy account?

Kbin is really only one instance (kbin.social - the only alternatives are alt language instances, I think?

Nah, there are like two dozen instances that are still accepting signups, and most of them are not language-specific in any respect.

Doesn’t really solve the question of “how do I pick an instance,” just substitutes one set of instances for another