Strikingly, these variations are not reflected in the TD-DFT excitation energies (Fig. ). Even those molecules with the largest difference between ω IE and ω GDD exhibit very small differences in excitation energies (ca. 0.1 eV), indicating that excitation energies are not exquisitely sensitive to ω, at least not in the vicinity of the optimally tuned value. To set a baseline establishing that LRC functionals do improve the description of CT states, we also show TD-PBE0 errors in Fig. . These are much larger and tend toward significant underestimation of CT transition energies.