Well, it depends on what you're looking for out your laptop. The flex is all about being a mobile machine, whereas s410p os more powerful. Generally with a non-touch model vs a touch model, think like this:
Two equivalently priced models are placed side by side; one has touch: the other does not. At the price point, the touch model had to find the funds for a touchscreen somewhere, right? So it takes funds from the power budget. As such, the non-touch model is more powerful, but it also doesn't have touch.