8190 is 100% SK90 grade Dyneema. Due to it’s 100% Dyneema construction, it holds up extremely well to abrasion. Standard strand count 28 (Compound).
452x is a Dyneema/Vectran (67% SK75 Dyneema/33% Vectran) blended material chosen by many target archers. 452x shoots in quickly, is stable over time but is not as abrasion resistant as other materials. Standard strand count Compound = 24, Recurve = 20.
8125 is 100% SK75 grade Dyneema. 8125 is the material Winner’s Choice built it’s reputation on, providing good arrow speed, a soft shot but does require a longer shoot in period. Standard strand count 20 (Compound).