First of all, I'd like to say, I am not here to debate with anyone, I'm just simply sharing my experience with the OP as he has asked.
When I got saved I started attending a p/c church. And no, we don't teach you have to speak in tongues to be saved. The reason why I believe gifts of the spirit are for today is mainly because of my interpretation of 1 Corinthians 13:8-10
"Charity never faileth: but whether there be prophecies, they shall fail; whether there be tongues, they shall cease; whether there be knowledge, it shall vanish away. For we know in part, and we prophesy in part. But when that which is perfect is come, then that which is in part shall be done away."
Well, I believe the perfect is referring to Jesus. I understand some believe it refers to the bible and I'm okay with others having a different view point than me,
There are more scriptures but I'll share one more:
"And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions." Joel 2:28
Now time for experiences, I read a true story of a Vietnamese man who was a type of marxist-leninism. He decided to go to a church to mock the believers. When he got there, they were speaking in tongues, he heard one man speak in Russian. After the service was over, the Vietnamese man went up to the Russian speaking man and asked, "Where did you learn Russian?" and the man replied he didn't know Russian.
Another story, former Pastor at my church was flying on a plane and felt compelled by God to speak in tongues, so he did. And the man that sat next to him said, "How do you know how to speak in my language? I come from an island of only 50 people." So the man heard the pastor say something like, "Believe in God." I've heard more stories like this too.
Being in the p/c church for a while now, I've received prophetic words and visions from other people and it has encouraged me and strengthened my faith very much. I just cannot see how God is not in it. I know unbelievers that have become believers because of it.