I'm going to have to vote for Oh Daddy. This is a tough call!
I LOVE I Don't Want to Know! I don't think it can be compared to Silver Springs; it's a different kind of song. In fact, I was shocked to find out that Stevie wrote it! It seems more like a Lindsey kind of song. As for SS being left off Rumours, it seems the song found it's rightful place, time, and sound on The Dance. It's how it was meant to be