Putting the anal user hat on:
Only nostur saves where I left off on the timeline.
Only yakihonne and primal open links in app but primal doesn’t have emoji reactions and yakihonne frequently freezes for a fee seconds while scrolling.
Ditto has the UX of a cordova phonegap app right now
Damus is definitely a client that exists.
Possibly all of them, every now and then, faint while fetching replies in a thread.