Anywhere other than the far sides. If you sit on the far sides, you will miss some visuals that are partially obscured by pieces of the set. I saw this from the far left side of the front mezzanine, and I saw almost everything, but I definitely missed some visuals. The sound system is great, so there's no issues hearing anything in the way back of the theatre if you go that route.
From an affordability standpoint, rush is a great option for this show, and the rush seats are not very obscured. I'd aim to be around 10th in line for rush to get the best available seats; first eight or so will get box seats which I've always hated.
If you plan to pre-buy and don't care much about price, I'd just go for anything non-premium in the center orchestra, since everything there costs the same except for the very far sides.
BROADWAY: The Cripple of Inishmaan, This is Our Youth, If/Then, Hedwig and the Angry Inch (x3), Cabaret (x2), The Real Thing, A Gentleman's Guide to Love and Murder, Chicago, Les Miserables (x2) Disgraced, Finding Neverland, On the Twentieth Century, Wolf Hall Part I, On the Town, Fun Home; TOURING: Jekyll and Hyde, The Book of Mormon; LOCAL: The Twilight Zone, Anne Boleyn, Death and the Maiden, The Lying Kind, Chorus Line, Stupid F**king Bird