Zbrush has a Subdivision Scheme which not all SubD Modellers utilize: While in most SubD-Modellers one can add many virtual Subdivisons one actually still has the Face-Count of the Basemesh at disposal (unless one collapses the SubD-Levels).
Inside Zbrush, when using Brushes like Move one can see that all Subdivison-Levels are fully exposed for editing - so with each new Subd-Level one gets 4 times as many Vertices to drag.
My question: Is there actually also a (non-sculpting) Subdivision-Surface-Modeller which also gives full access to all Levels of Subdivision (without Collapsing/Freezing?)