I would say closer is better. In 2 shows, Lisa Lambe has reached down and taken me by the hand (once last year and once this year). Also, twice she sat in my lap during TAR on the front row. Encounters like that are not possible further back.
During the 2013 Believe tour I had two shows with front row aisle seats which I chose on purpose hoping to get Lambenated but in both cases she sat in someone's lap a few rows back.