Why don't you like your divided tank? Maybe we could help make it work better for you.
That being said, if you really don't like your divided tank, I would just put one of your boys in the new tank. I personally think that tanks (and fish keeping in general) should bring enjoyment and relaxation. If your split tank stresses you out you shouldn't just put up with it.
Remember that the tank your fish lives in is his or her's whole world. Ask yourself this question, and answer it honestly: would you choose to live there?