Which One? :/

Ok so lately I've been thinking about Kai's design, I'm honestly not sure what to do with him. I've just redone an old revamp and I'm starting to think that I should go back to it, brosif has been telling me to keep my current design mainly because of it's simplicity. But he also told me the design of the one I've just redone looks really good, so I need your help to tell me which one I should do? Please leave a comment