You're right in that 99% of them are complete garbage. However I was pleasantly surprised when my company switched to Zoom[1]. A company I had never heard of before. In terms of call quality I've never experienced anything better. Beyond that their mobile experience is almost better in terms of raw features than their desktop app (which is still very good in its own right).
1.) https://www.crunchbase.com/organization/zoom-video-communica...