2007 - On the WWE Title side, we had John Cena, Randy Orton, and Triple H holding the Spinner Belt, while on the World Title side, we had Batista, The Undertaker, Edge, and The Great Khali holding the Big Gold Belt.
2008 On the WWE Title side, we had Randy Orton, Triple H, Edge, and Jeff Hardy holding the Spinner Belt, while on the World Title side, we had Edge, The Undertaker, CM Punk, Chris Jericho, Batista, and John Cena holding the Big Gold Belt.
From the Main Event scene alone, I think 2008 takes this.