In many small-molecule cases, we find that TD-DFT excitation energies are surprisingly insensitive to ω in the vicinity of the optimally tuned value, so results using ω IE versus ω GDD are often statistically indistinguishable. For larger systems and some open-shell species, differences are more significant and the GDD procedure provides stable results even in when the HOMO/LUMO gap is not well behaved, which is problematic for IE tuning. Overall, we find GDD tuning is a simple replacement for IE tuning that offers advantages in many cases. It is already used routinely in some ground-state applications of LRC-DFT, and we encourage its widespread use in TD-DFT applications as well.