Basis sets tested here include Dunning's correlationconsistent sequence, aug-cc-pVXZ (with X = D, T, and Q); Karlsruhe "def2" basis sets through def2-QZVPD; and Pople basis sets 6-31G*, 6-31+G*, 6-311G*, and 6-311+G*. Pople basis sets use a common orbital exponent for s and p functions in a given shell, which makes them much more efficient than alternatives with a comparable number of functions, provided that the electronic structure program takes advantage of this simplification. As such, Pople basis sets continue to see widespread use in DFT calculations, especially in large systems.