Red Dot and Holo
1. Red Dot and Holo are NOT the same thing.
2. Red dot systems MAY be useful for rapid target acquisition. You should try one. I, personally did, and was not impressed.
3. Holo sights used in a copter are a specialized application. Look for one after you get the copter.
4. Precision optic systems (riflescopes), IMO, are VASTLY superior. Even cheaper optic systems with magnification and objective focus (even Tasco) are more useful.
You are not missing anything. But try one to satisfy your curiosity. Oh, and they are Tacti-kewl!. Get a black one!