My Roubaix came with the ALX 295's as well. They were ok. Strong and not super heavy. I recently upgraded to EA70 wheels cuz I got some birthday money. The bike did come alive. As for how much I can't say. The new wheels are lighter so less rotational mass means more speed. There is a reason why there are low end and high end wheels. How much of a difference you will notice from upgrading from the 295's it's tough to say. They aren't an exciting looking wheel either. I kept mine to use as beater wheels.