I am debating between these two optics for use on my 11.5" 5.56 SBR. This is my main "go-to" rifle that's setup for NV use with MAWL laser and Modlite OKW for longer visible light shots. It previously had an Eotech with vortex micro 3x, but I moved that setup to my 300blk SBR instead. My main consideration for the ATACR is better low-light performance and eyebox. However, is the eyebox and glass worth $1k more than the NX8? Or is it diminishing returns after the NX8?