Could use some help! :)

So i got almost 3150 IP on other ACC and im thinking to buy a champion for 3150 IP but it's hard to decide which, because the champion i will play i will main on the ACC the champs im thinking to buy is - , , (not sure about the last, its a bit like , meh,)

If you say: '' whats you play style'' i have to say, now i don't care because i can play anything :DD....