They're better and don't start to fall apart as soon as you open the bag.
I think they used to break down based on heat and humidity but IIRC they've now changed it to break down from UV. TBH I still use Styrene BB's at home and I'm half finished a bag of G&G Bio's that are average quality (they were what was available at the time) it looks like they're still good to go, and the package was opened in September as the season was winding down.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE