Nismo vs. HS vs. OBX vs. AEBS

Ok I am looking to buy a header. Both Nismo and AEBS are really expensive, but from what I've read, they seem to produce the most horsepower. Also AEBS has a place for the second O2 sensor to go, so there's not too much worry over that, I'm not sure if Nismo has the second O2 sensor or not. HS is pretty cheap compared to the previous two, but produced a bit less HP, and it only has one place for the O2 sensor, meaning the other one need to find a place to go, which may result in more money spent. Someone told me about OBX and how it's basically just like HS, only cheaper. Putting money on the side and not worrying about it, in everyone's oppinion, which one of these four is the best performance wise?

nismo & HS