This is from my point of view the best version of the image. The RGB part of the image is based on a bicolor pallet by letting Ha represent RED, OII Green and blue. In addition I added a "Superluminanse" at nonlinear stage. The superluminanse is an integration of all sub exposures that gave an extreme low noise image which I also assume is more suitable to be used as a luminance than Ha. Finally some colour adjustments and masked stretching of the OIII shield has been done