Fig. shows that the overall performance of the q-vSZP basis is maintained, with slight differences from the first version. The WTMAD-2 changes from 12.6 to 13.0 kcal mol -1 . In particular, q-vSZP-v1 (light blue) performed slightly better on intramolecular non-covalent interactions (NCIs) and reaction barrier heights. Meanwhile, q-vSZP-v2 (dark blue) is more accurate for reaction energies for large systems and isomerizations. Overall, the differences between the two versions are negligible, especially when compared with conventional nonadaptive MBs. The electron density on charged species, the amount of basis set superposition error (BSSE) of the q-vSZP basis set, and electric field-dependent molecular properties are virtually unaffected by the presented update and will thus not be discussed again.