I'm with you on this one, Andy. It's the most realized, complex and layered song on the album. Musically, that is. I would have personally switched this with Kylie on it's placement on the album and had Effington be the closer. Kylie's a beautiful track, but is no where near as powerful as Effington.
Why?
His piano playing is the strongest here. The vocals are oh so deliciously tight, especially the little harmonies dispersed through out. The dynamics are well, dynamic! Haha. It's a good balance of loudness and softness throughout Effington.
The only thing I would have changed about it is the ending. I would have added an extra "Oh!" and just for it to be a little more cathartic at the end. It sort of just stops.