You can't tell who is good and who is bad, and each has its own advantages. You said these dance groups are good at different kinds of dances. Hiphop SPY Dance Studio is the Poppin of New jazzCK Dance Company, and the last two are pure breakin' groups. If you want to study, I suggest you position yourself first and choose the one that suits you best &; I am most interested in dance, and then I specialize in it.