Here, we present and discuss our results comparing several general small molecule force fields against reference QM data. We are interested in two major categories of comparisonenergetic agreement and geometric agreement. An ideal force field will yield the same energy minima or optimized geometries as the QM energy landscape, with no additional or missed minima, and the energies of those minima will agree between QM and MM. However, with even minor energy errors, the relative ordering of the QM and MM minima could be different even if all minima are present in both landscapes. Thus, to assess performance in these two categories, we computed relative conformer energies and compared these between MM and QM, as well as assessed geometric agreement of MM optimized geometries with those from QM.