Which one would you rather buy: keel, nbis, iren or now?

I am tring to sdd some new stocks to my positions and wanted to see what do you guys see has the most potential out of them, the last stock i added to my collection was bb a month ago, which niw has boomed alittle and i am very happy with it and its feature, now i am tring to see the other stocks and the ones i mentioned i always see people talking about, i think i can get into only one or two new position?