Ah, Dyson. Now I recognize that. I'm so old, everything is a Hoover.
OK, while I've dismissed the subjective, "It's movie, it must be better," comments, I admit I've gotten very curious. Here are some things I've found out along the way:
1) I've looked at the Kodak tech sheets for the 50D, 250D, and 500T films. Due to the fact that consumer Kodak films now use a different standard than the old RMS granularity, it appears to me that they still fall short of the best C-41 films.
2) Likewise, the resolution falls short of Ektar 100. Even the the 50D. The only two films that Kodak ever rated the resolution of as "Excellent" are the Ektar 100 and the consumer 400 High Definition, may you RIP. (Still my favorite.)
3) You can buy 400' cans of the Kodak films on eBay for around $100.
4) If I had to find another high speed color negative film, as I will after my 400HD stocks run out, I'd go for the Portra 400 and not worry about rem jet. Heck, it's even based on the Vision3 technologies! B&H iists a 100' bulk roll, but no price.
I think between Ektar 100 and/or Kodak 400HD or Portra 400, it doesn't make much sense to use the Vision3 films other than for fun or experiments. OK, you can save some money.....
So, I do have one roll each 250D and 500T coming to putz with, but I can't see them bettering what is out there for still films.
4) And with the ECN films, you are locked into home processing, no option to go to a (rapidly disappearing) minilab.