I finally found the elusive 6 disc version of Earth Final Conflict Season 1.
There are 3 different versions for Region 1, 2 of which have issues.
The Universal release for the US is a 5 disc set, it has a few extras but the episodes are time compressed.
The case has the Universal logo and is cardboard.
There is a 6 disc release by Alliance, but it comes in a poorly designed case that damages the discs.
The case has the Alliance logo and is cardboard.
What I obtained this time was the Alliance 6 disc set , it comes in a standard thickness case.
The discs were perfectly playable and not time compressed.
If you are trying to collect the entire series, this is the version of Season 1 you want.
Universal never released Seasons 2,3,4,5 for region 1 - all of the other region 1 releases for those seasons are Alliance releases. I've seen the Universal Season 1 combined with the Alliance Seasons 2,3,4,5 sold as the complete series, but no mention of the time compression for Season 1.
Sadly the images offered sometimes do not give you clues about which Season 1 you are getting. I purchased a different Season 1 advertised with images of he Alliance Season 1 but got the Universal Season 1.
I had to order from across the border, but I got exactly what I wanted.