Which impression material provides the best combination of fine detail reproduction, elastic recovery, and dimensional stability?

Vinyl polysiloxane (VPS), also called addition-cured silicone or polyvinyl siloxane (PVS), is considered the gold standard for final impressions due to its superior: (1) dimensional stability (can be poured multiple times over days/weeks), (2) elastic recovery (excellent snap-back after removal from undercuts), (3) fine detail reproduction, and (4) hydrophobic properties that can be modified with surfactants. Polyether also has excellent accuracy but is more hydrophilic and stiff, making removal from undercuts more difficult. Alginate is inaccurate dimensionally and must be poured immediately. Condensation silicone releases alcohol as a byproduct, causing shrinkage and poor dimensional stability.