Keep them sealed if your main goal is collecting sealed products, but remember that condition, set popularity, and scarcity matter
Also, it can save you a turn as some SP players will be using Ambipom Gs Tail Code attack to move the Rescue Energy to a different Pokmon so they do not have to deal with your attacker coming back to life next turn
I would like to show you one of the decks that I call Rose Dragon

(There is also a post on Reddit by cardzard.com, based on 2,350 packs, which arrived at a pull rate of 1/4 for baby shinies, 1/9 for Shiny Pokmon-GX, 1/73 for Shiny Vault full art Trainers, and 1/57 for full-gold cards.) Here is the data: image94997 4.82 KB From left to right, the columns show: number of packs in the sample holos (only looked at in my own sample) regular Pokmon-GX full arts from the main set (greyed out as it doesnt correspond to a single sheet) full art Pokmon from the main set (Moltres, Zapdos & Articuno GX) full art Trainers from the main set (greyed out as it doesnt correspond to a single sheet) secret rares from the main set (Moltres, Zapdos & Articuno GX) (greyed out as it doesnt correspond to a single sheet) combined full art Trainers/secret rares from the main set baby shinies Shiny Pokmon-GX (assumed to be on a sheet of their own) full art Trainers from the Shiny Vault (greyed out as it doesnt correspond to a single sheet) full-gold cards from the Shiny Vault (greyed out as it doesnt correspond to a single sheet) combined full art Trainers/full-gold cards from the Shiny Vault (assumed to be on a sheet of their own) full art Trainers (all) (for comparison only, greyed out as it doesnt correspond to a single sheet) At the bottom, the model I am assuming for box ratios is shown (Hidden Fates wasnt sold in boxes, but the ratio of cards per 36 packs is simply very usefull for comparing with other sets)

What makes this series so special is that the Tamers have more influence on the battles that occur throughout the series