We have extensively benchmarked the required methodologies for obtaining accurate cluster electronic binding energies. In the recent years we have curated the Clusteromics I-V datasets composed of the acids SA, MSA, NTA and Formic Acid (FA) combined with the bases AM, MA, DMA, TMA and EDA. All combinations of the species have been considered, leading to a database of a total of 56,436 small acid-base clusters (up to 5 molecules). Based on previous benchmarks, the cluster geometries and vibrational frequencies were obtained at the ωB97X-D/6-31++G(d,p) level of theory and all data is freely available in the Atmospheric Cluster DataBase (ACDB). Recently, we applied the full Clusteromics I-III datasets to massively assess the electronic binding energies of 11,749 atmospheric molecular clusters. Such a benchmark set can be used for detailed statistics to be carried out, allowing an informed decision on the best level of theory to apply. However, to date there exist no benchmark studies that have addressed the geometries of atmospheric molecular clusters.