What 6300 champ should I get below are the ones I have.

Ah sorry my bad misread the title^^

Well given the champs you have,you seem to like champs with a good damage output,so I'd in that direction.

Though some factors to keep in mind are: -Vel'koz and Zyra will get a small ability rework this year -The oldest 6300 will have his/her price reduced once a new champ gets released,so buying the newer ones is in a way more cost efficient(draven will be the next to get his price lowered after darius) -Aatrox is likely to get a rework as well,but we don't know when,so it might take years for the rework to come. -Kha'zix,Elise,Kindred,Rek'sai,are almost exclusively played in the jungle,so if you don't like to jungle you probably shouldn't buy them,especially since these champs tend to be far less effective outside of the jungle(kha is all about ambushing your opponent,rek'sai can only create a tunnel network through the jungle and kindred can get their stacks much easier if they jungle)