The Events Calendar is built by one of the most recognisable names in the WordPress space, meaning it is extremely solid and reliable.
It's effortless to get a basic events system running.
Out of the box, there's a simple calendar, event page and handy buttons for attendees to add events to their own Google Calendar or ical.
If you need more than that, it has a TON of features and customisation options that cover things like:
- Recurring events
- User-submitted events
- Aggregating events from other feeds
- Great search and filtering