Shopko X-Files Season Sets B1G1 Free - $19.99 & Collectors vs. Slim ?

[RoGo7]

Seasons 1-9 of the X-Files are $19.99 and Buy 1 Get 1 Free at Shopko.

Which sets have the extra discs for collectors? Which ones are ok to buy slim?

My Costco still has the collectors sets at $20, but I can save some by buying slim.

 

[kube00]

I think the collector's have bonus features

 

[RoGo7]

I checked each DVD release on Amazon to compare.

Slim:
Season 1: 6 discs
Season 2: 6 discs
Season 3: 6 discs
Season 4: 6 discs
Season 5: 6 discs
Season 6: 6 discs
Season 7: 6 discs
Season 8: 6 discs
Season 9: 7 discs

Collectors:
Season 1: 7 discs
Season 2: 7 discs
Season 3: 7 discs
Season 4: 7 discs
Season 5: 6 discs
Season 6: 6 discs
Season 7: 6 discs
Season 8: 6 discs
Season 9: 7 discs