looking at this model to replace 2x IPC-HDW4231EM-AS as I really need an extra cam in the coverage area, would this be an upgrade in quality compared to my current model? I have 4 other IPC-HDW5231R-Z so I would be inclined to just pull more cable and mount 2x of these or the newer IPC-HDW2231R-ZS to achieve the same level of night color, sharpness, etc. I certainly do not want to lose anything