We used WebEx before switching to Zoom. I was not a part of the buying or decision making process, but I do use Zoom often as I work in our East Coast office as opposed to our CA HQ. It makes it easy to have meetings with other colleagues and prospects.
The Zoom Rooms are great for going in and sharing screens in a meeting or having a meeting with full teams in different locations. However, it is very common that the audio will simply not work and we have to manually dial in. This also hurts the audio quality when you manually dial.
Zoom is well-suited for companies that have a lot of remote employees or different office locations. It's just really tough when a meeting has to get pushed because you are having technical difficulties. It's also not great for sharing screens when you want to "extend" your screen, it only allows you to duplicate.