I just looked up the QH P9. The Vektron advantages are that it’s a real folder, if you need this feature, has a better drivetrain (10sp Deore vs 9sp Alivio) and the fully adjustable Andros stem. It weighs about 1.5lbs less, so that’s a draw.
What I can tell you about the 2017 Vektron S10 is...