Last fall i picked up my first crossbow which was a Horton Vision Crossbow. I got it at Cabelas for about $850 as a Combo with a nice optic with an illuminated reticle and bolt compensator. This was a very unique crossbow and definitely the most quiet. At first the illuminated reticle seemed to be secondary to me, but it had an option to be green or red. I didn’t understand the level of thought put into the optic until I started using it in the woods. The green reticle was probable the best one in the brown and yellow woods I was in and I stuck with that for the entire day.
The newest and probable best selling optic we have right now is the Trijicon 1.5×16 ACOG. This is a Mini ACOG and will can be used with traditional ACOG mounts, but there is a smaller more appropriate mount for it. Trijicon ACOGS tend to be a medium range optic, but these 1.5×16 give you a minimal amount of magnification, but zero battery use. There are other reticles available besides the red ring and the green ring, but the green ring reticles are now the most popular selling although many of our LEO are still using the red reticles.