Murray,
Ektar does come in 8x10, scans REALLY well, really fine grained. Stunning, really. I always shot 400NC and 160NC, only going for VC versions of the 160 on certain editorial portraits with strobes. I really liked 160VC with darker skin tones, it brings out the magenta which makes a subject come alive. I liked 400NC for its gentle tones and delicate palet. The new Portra 400 is has lost that delicacy, in my opinion. Saturated colors come out as garish, especially neons and deep blues. Skin tones on Caucasians is nice. Structuraly, it scans as well as Ektar, slightly larger grain structure but nothing you can really see.
Ektar is vibrant, rather than just satrurated. I think its a little heavy on the reds, but it is never really OVER saturated as compared to the NC films. As compared to VC films, Ekrar is more balanced, if that makes any sense, less, in a word, gimmicky than the VC Portras which I only used in limited circumstances.
Try it out. I think you will dig it.