I prefer Portra 160NC and 400NC over the Fuji equivalents as well. I tried some Kodak 100UC (not Portra), not expecting to like it - and loved the flattering skin tones, extremely low graininess, high speed (I found it to be as fast as other 160 speed films) and remarkable handling of highlights (great latitude). I've read other reports that say exactly the opposite. Just goes to show how much it is a matter of personal preference and how much other factors influence the final image.

Best,
Helen