Guess it all depends on what you plan to use your AR for most often. If its a home defense gun, how many 100-200 yard shots are you going to be taking in your home? If its for varmint control a little bit of magnification might be needed.
There are a variety of variable zoom red dots out there with a range of 1-4x which is a good mix of the two needs.
I have a 4x ACOG scope on mine. Anything 100 yards and in I shoot with both eyes open. Anything farther out only thru the optic.
I only have the one AR at the moment so it's a mix of both home defense and varmint gun. Being I'm in the high desert and there is amble 200-300 yard shots available, which is why I went with a 4x with BDC reticle.
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