To investigate the influence of basis set choice on the accuracy and computational cost of BAC-corrected ∆H • f values, we paired these QM methods with a diverse selection of basis sets, ranged from minimal (6-31G(D)) to triple-and quadruple-zeta expansions in both the Dunning (cc-pVnZ) and Karlsruhe (def2-nZVP) families, including augmented variants. By systematically benchmarking this extensive set of QM methods and basis sets combinations, we aim to provide a thorough assessment of BAC performance across a wide range of model chemistries, offering insights into the most effective approaches for obtaining accurate ∆H • f while balancing computational cost. The complete specification of all 284 model chemistries is available in the Supporting Information.