Ektar is a great film, like others have stated in this thread it's got a bit more "pop" than portra and it exposes very nicely at box speed. Here's a couple of examples of my own...

http://www.flickr.com/photos/hassy50...n/photostream/
http://www.flickr.com/photos/hassy50...n/photostream/
http://www.flickr.com/photos/hassy50...n/photostream/