In this study, we evaluated four new functional forms to construct DC functionals. As a result of this evaluation, we presented a new functional called DC24 that supersedes our two previous DC functionals. As compared to our previous functionals, DC24 has improved accuracy and improved physical interpretation. It has a MUE of 1.73 kcal/mol over the database used for parameterization, which is a 9% improvement compared to the earlier version of the DC functional. It also has a much clearer physical meaning than the earlier version and has the advantage of having continuous functional derivative.