I hodled mine until I had enough for both potions and then bought the anniversary deal to use them on. So far the results have not been brilliant and I wonder whether the increase is so small as to not be statistically significant.
I don't think I'd bother with the legendary one another time but I might buy another gold one.
I'm not sure but for now I'm hodling again while I decide. 😁
There was a graph based on math that showed the ROI of using the potions. I searched for it but sadly couldn't find it but its out there somewhere.
I didn't see that one but I read an article that said it was worth using them on the orbs and the beta packs but not so much the rewards. So I saved up. 😁