Two very different sighting systems. It depends if you want magnification or a red dot for close in allowing the use of both eyes and a very fast combat target acquistion. You do have to pay additionally for a magnifyer. Personally, with my 49 year old eyes, I went with a detachable mount and a compact 1.5-4.5x scope. The lower setting still allows the use of both eyes for up close, with having the option of more magnification if needed. With the detachable mount I can have quick access to the irons. Also I plan to add a laser sight for close in low light conditions. This seems to be the best option for me. hth.