If you have the room, are willing to spend the time playing with placement and don't listen at 65 dB (exaggeration) , I would pick the chorus IIs, but they tend to show up less often and for double the price (not worth it to me) in my neck of the woods. If that were even close to the case, I would pick the chorus I. If they are close in price and both available considering what I mentioned above, I would pick the chorus IIs