Chromes are definately sharper, but not as smooth. If smooth means that I can be a bit more heavy handed without causing irritation.
There was more of a rasping sound in my razor when using the chromes. Stiffer?
There wasn't much to choose between the two when doing an everyday shave, and I could only manage two shaves per blade. However I tried a stainless on a two day stubble (dialed up the Futur to 5) and found that I could not pull the razor through my beard. It felt more like plucking than shaving. The chrome handled a two day stubble ok. Still not as sharp as a Feather.
I prefer the packaging of the stainless, paper wrapped in a cardboard box, and with no annoying gum on the blade.