Both NGSgo-AmpX kits are designed as single locus amplification strategy featuring exactly the same coverage per locus. The difference between the two kits is the polymerase enzyme. NGSgo-AmpX v2 contains the GenDx-LongMix enzyme, and NGSgo-AmpX v3 uses GenDx-LongZyme. Both enzymes perform well, but GenDx-LongZyme (v3) shows a slightly more robust amplification results with les lot-to-lot variation.