The Osight SE is just plain better. Better glass, slim housing, good size window for a micro optic. Only negative is mine is the green 6 moa and I would’ve preferred the red 6 moa.
Either way I’m mounting the eps core for the one killer feature auto brightness. The forward facing ambient light detector works really well. Now I don’t need to worry about if my light is at the appropriate brightness depending on my environment.
The larger housing on the core gets in the way of vision while the osight does not. Really don’t love switching off the osight, but managing brightness levels is not something I enjoy.