While many of these models are optimized for specific properties, such as density and heat of vaporization, their ability to accurately predict other critical properties, such as viscosity and thermal conductivity, remains limited. This issue underscores the need for force field refinement or the development of improved models that can more reliably capture both thermodynamic and transport properties across a wider range of conditions. Amoung the five models benchmarked in this study, while none of them achieved a perfect match with experimental data across all properties, HUANG's Class II model emerged as one of the most reliable options for simulating PDMS, especially in predicting density. For simulations requiring the inclusion of a broader range of chemical species, practitioners may consider using the OPLS-AA universal force field as a viable alternative.