Some short scopes of glowing reticules. Even without the glowing reticules, they still magnify ambient light. Not to mention you can use infrared laser pointers coupled to a night vision goggle.
The glowing reticule would be better, but Id personally rather have the dot or triangle. I find it less busy, and distracting, especially in lower light.
The lower power scopes Ive used, dont have the light gathering objectives the bigger scopes have. I really dont see much if any difference between them and my red dots.
Laser and night vision are nice, but expensive, and I still get a 24 hour sight with even a cheap red dot. My M2's are NV ready too.
Hey, it all comes down to what works best for you. You really cant go wrong with either. With todays zero repeatable mounts, you can actually have the best of both worlds with one gun, and its nice to have the options. My AR with the 1.5x5 on it, also has a pre zeroed M2 on its own lever mount. It can be either or, in about 15-20 seconds.