Its hard for me to say, I'm a newbie. Its been hard finding wider rims 17-19mm internal. I don't hate what I have but I live where winter tires will be required so I figured I'd have 2 sets of wheels, one for snow and ice, one for clear roads and just swap them as the weather dictates, so since I need a new set of wheels to do this, I figured I might as well upgrade meaning less weight, better hubs. Its hard to know what an upgrade is since Giant doesn't give the specs on the wheels I have other than they are 19mm internal diameter.