To the OP,
MOST amateurs(and even a good number of professionals, even those who shot film) have ZERO clue on how to properly balance film scans, even digital files... Ektar 100 WAS designed with digital post-processing in-mind, as were the Portra 160 and 400 films.
I use Ektar 100, Portra 400(very "pushable" up to 1600ASA, albeit with loss of natural saturation and a ramped-up contrast level, personal testing is recommended in this case).
Personally, I expose my film as if I were planning to optically print in the darkroom(which I still do, when given the chance). Darkroom contact sheets(for me at least) prove to be a very suitable way of quickly editing from a roll of shot film. A great, high quality loupe and a properly made contact sheet, in daylight balanced light, it's EASY to sort through which frame is best. All of this without needing to scan every frame.
Ektar 100 has been called "too blue" from many people, again, people who have NO CLUE on how film "sees" light, compared to how our eyes fool us. Film is balanced for a specific color temperature, where as our eyes can adjust to a certain degree.
In most blue-sky conditions, with Ektar 100, I am using AT LEAST an 81A filter, however, sometimes when it's direct sun, and totally blue sky conditions, an 81B filter will work better. This helps to cancel out the "blue" conditions. It also aids in bringing the color temperature of the SHADOWS(which are "cooler" in color temperature anyhow) most.
Having a well balanced, properly exposed/developed negative helps leaps and bounds in the darkroom, but also when scanning.
Personal testing is recommended, but I highly recommend picking up some high quality glass filters to use with Ektar 100, because when well done, it's a superb film, capable of tremendous, COLOR ACCURATE results. Portra has a "softer" curve than Ektar, but it was designed with the portrait/wedding photographer mostly in mind, where as Ektar was designed to be saturated(some say too much, I say actually quite accurate in it's response curve across the entire spectrum).