Who to buy?!?

Hello my name is Isaac and I am a bronze player! I currently have a silly issue! It's who to buy! I currently have 6300 ip and I'm looking to pick up a fun champion that I will enjoy playing. Here are the champs that a can decide between! Reksai Lee sin Khazix Nidalee Or save my ip I enjoy playing top and lil bit of jungle and also some support so it's really hard to choose! I understand that no champion is truly better than another in all perspectives but I am just looking for preferences and what would fit me best! Thank you so much for you're input!