I have seen enough side by side comparison and seen first hand. ICS, Bastard, Madbull you name it.
Not sure if it has to do with bottle vs bag, but from people I know in the pharmaceutical packaging industry bottles are far superior to bag for preservation of product.
Then you add in the quality of the product itself.
I have issued hundreds of bottles of .28 bios now. Not one person has said a peep to me other than, "do you have more".
And they make a .32 G bio
Note they are .5.95 mm.
5.98 or higher