For bigger classes Meet is just not good enough. Unless it changed recently they've got a limit of 20 connections per meeting. Also you can't mute everyone apart from you easily (you have to do it one by one) which adds another problem.
Until July 1 the premium version of Hangouts Meet is made available for free to you if your university has access to Meet. This means up to 250 people in a single meeting:
"Starting this week, we will begin rolling out free access to our advanced Hangouts Meet video-conferencing capabilities to all G Suite and G Suite for Education customers globally including:
- Larger meetings, for up to 250 participants per call
- Live streaming for up to 100,000 viewers within a domain
- The ability to record meetings and save them to Google Drive " [1]
Zoom definitely has better crowd control (for lack of a better term) than Meet does. Meet does have some relatively unused but helpful features though like the questions that you can ask as an audience member and upvote others' questions. Can be very helpful in a lecture.
