Up to this point, only the relative energies extrapolated to the CBS limit have been compared to PW results, but the quality of the GTO extrapolations can also be assessed by how faithfully they reproduce the single data points. Averaged on all systems, fitting curves of Rovibi34 and Rovibi45 show a MAE relative to the data points of no more than 0.5 kcal/mol (Table ), while the latter lies between 3.8-7.6 kcal/mol for Helgaker and Martin4. As a reminder, these errors refer to the total (absolute) energies of the dimers and monomers that have been extrapolated individually. Hence, Rovibi34 and Rovibi45 not only provide interaction energies close to the PWs in the CBS limit, but are also capable of interpolating total energies well. In this respect, Rovibi34 performs best with a MAE of 0.15-0.3 kcal/mol against 0.3-0.5 kcal/mol for Rovibi45. We also stress that the double exponential scheme of Peterson, although purely empirical, shows even smaller fitting MAEs of ∼0.1 kcal/mol (Table ) and provides deviations against PWs that are similar to those of Rovibi34 (Fig. ). Consequently, our results do not disprove it as a good extrapolation law. However, based not only on agreement with PWs and the ability to interpolate GTO energies, but also on theoretical indications, it appears that Rovibi34 (46) constitutes likely the best global choice when resorting to three/four-point extrapolations (DTQ, TQ5, DTQ5) to the CBS limit.