The silicone-free dressing was created for body shops that also did some detailing work (imagine you spending 3g+ on a paint job that looks awesome but your car has brown tires). I used all-season on exterior surfaces (after 2 weeks, it seems to be holding up) and hyper dressing on the interior. I also bought poorboys trim restorer/dressing as it claims to make wax on trip go away plus shine it. I will compare the two when i get time.
I have been satisfied with both hyper and all-season. There is really no reason to get silicone-free dressing unless you work in a body shop environment as it was created to cater to this market. Most dressings contain silicone (petroleum distiallates) so don't let that be a concern. In fact, I'm sure this is where the durability of a tire/interior shine comes from, though I am not a chemist.