well I'm testing like 5 6 apps for lemmy rn. I'll settle with one maybe after a year or two when everything settles down. rn I'll say sync ui is fluid and rich but still incomplete. infinity felt better than reddit client which I'll completely agree with you.
i just tested these apps and I'll say connect works really better for replying to comments. all those apps just showed me what was the reply not the parent thread. which is quite frustrating also.
Edit: tested this on summit also works really good for context rest of those apps need to improve inbox section. without context i can't just reply to a comment.