Should I open prismatic cards or keep them sealed? - Facebook

So just looking for advice. So mainly I have been looking to stack Prismatic Evolution and have only been opening Mega and Phantasmal and trading for more Prismatic however if this was your collection would you open any of the Prismatic or keep it all sealed? Only asking because I love Prismatic but it's just so hard to get it at MSRP Current Prismatic 3 Figure collection 1 UPC 5 ETBs 1 Lucario & Tyranitar collection 7 Poster Collection 4 Tech Sticker collection 5 Mini tins