This is an old topic, but I have just come across it and I thought to share my experience of events, it may help you make an informed decision.
Me and a friend decided to go to events, as there were not many events happening in our city, we had to travel south to attend those events, been to quite a few with different organisations, doing different formats. We used to come back thinking does he exists? It is difficult to decide about a person in one meeting and one conversation. Although most of them seemed average but no one for us.
Until one day I was visiting my sister and end up going to an event with her being my guardian. This is the event where I met my future husband. Even on the day of the event I didnt think much of it but we exchange details and continue conversation over the for couple of weeks over the phone. My family was aware of this, and soon enough they met him, liked him and took things further with his family etc.
It does take effort, commitment, time and money to attend events. It works for some and not for others. One needs to stay positive and know what qualities are 'must have' in their future partner, hopefully this will keep your search focus.
Also do personal analysis, are u willing to give what you are looking for etc.
May Allah guide us all and keep us in the right path , Insha'Allah.