There is nothing much to elaborate, the best is to see it with your own eyes : perform field trials ! For instance, choose 2 cities of same cell density. On the first city, apply BBH, on the second city, apply SFH.
You will have clear results, perfectly adapted to your case and that will serve as a reference in the future for your network. Plus, it gives you more experience as a frequency planner and a qos monitor engineer 😉 it’s a win-win situation, isn’t it ?