Sync is cool,but Jerboa is currently good-enough, while being free as in free beer, to wait until the recently released Infinity for Lemmy are being more robust.
Mine is that I have used Jerboa since I joined Lemmy a couple months ago. It's improved a lot, and even in its latest iteration is nowhere near as polished and nice as sync. It was an easy decision to switch.
The latest release of Jerboa keeps crashing on me, totally losing my place. I'm currently posting from Liftoff but I've also been using Connect sometimes, but both of those clients have their own issues.