I switched back to 8.1 when possible on everything (Yoga 13 will not update from 8 to 8.1). My main computer is a SP3 with a dock at work and at home. If you use a touch screen the new OS feels like a move in the wrong direction. If you use OneDrive extensively it again feels like a move in the wrong direction. I'm sure that this will change but I really like 8.1. It is the perfect OS for a SP3.