HD Polish+ or Scholl Concepts S30+
These are by far the best two polishes I own. S30+ is my go to for rotary polishing and seems to have a bit more cut than HD Polish+ but if you are looking for something to take the place of HD Adapt, I would absolutely encourage you to buy HD Polish+ and pair it with an orange buff and shine cutting pad.
I still can't figure out why the discontinued Adapt. According to 3d their AAT 502 finishing polish is suppose to use the same adaptive abrasive technology but cut more and finish better. In my experience it's harder to wipe off, has a much shorter work time, and doesn't cut or finish as well as HD Adapt did. I'm not sure how they reconcile the $12 increase in price. The AAT 501 Rubbing Compound has okay cut but as someone who does a ton of wet sanding, it doesn't cut or finish as well as M100, M101, or FG400. Plus it dries up and becomes a nightmare to remove. I'm really hoping they are listening and are working on the formulations because HD Polish+ is WAY better than the original formulation. I know the new cut+ formulation has a little more cut but I wish instead of trying to get more cut from their compounds they would focus on formulating another heavy polish similar to Adapt that is as user friendly as Polish + and HD Speed. In the meantime I'll just have to stick with Menzerna 2500.