I completely agree with that, but when it comes down to it, some people won't be happy with your decision no matter what you do. With what Joe said, so many factors need to be taken into consideration that it just becomes a very difficult topic for someone to give you an answer online about. According to your original post, I think you should go with the Hippo tang, I have read experiences of powder blues being more aggressive towards other tangs. Just be prepared to hear people complain about 2 tangs in a 180(I am not one of them, I think you should be fine).