I also prefer Portra 160 NC when I need color neg. Really, the best thing is to test and see which one appeals to your own sensibilities and works best with your print method.

Transparency for portraits--I like Fuji Astia, but I haven't tried the new 100F (still have boxes of the old stuff in the freezer). With old Astia, I felt it usually needed a very slight warming filter--81A or KR1.5--to produce a neutral result. The new version is finer grained, and is said to be a touch warmer.