I like experimenting and switching, so no choice is ever “final”. Speaking of open source apps: Jerboa is the only native (kotlin+jetpack compose) for Android and its author is one of the very creators of Lemmy itself so he is an authority and I really like his “philosophy”. Thunder offers a very polished and appealing UI/UX. Liftoff is feature rich even though somehow buggy. Apart from the mere app features, the community, the developer attitude, its being an open platform etc. are all factors to consider in my opinion.