Well if we're going to include NC, THE layback is P3 of Skyhedral on Cow Rock (next to Laurel Knob). Think flawless 100' 10a right angle dihedral with a finger crack and 300'+ of air under your ass. Guess where the name came from. The Womb is pretty good, but even at LG Hyperbola may be better. Of course, just go west to the TN/GA/AL sandstone for dozens (at least) of mega classic one pitch five star laybacks.