i was like you ta the begining:i was captured by all those animations,flashy attacks and all but after considering the prices for them,i had to think really hard over this matter.
so here is a tip for you: dont rush it,always be smart and patient for the right deal to come,dont waste money and try to ask everyone's opinion here.
when a new gatcha deal is out,you will find a thread here(i think) about it and there you can ask and then decide.