I voted for the MarkIII combo as that is what I was planning to use. However after doing some sighting in with red dots and the scope I did decide that I do not need the red dot but may add one on the mount on top of the scope if needed. You can get the combo with other power choices other then the 3x9 variable, You can get them in single power like 4x32, 6x42 . If you need less power for short range then the one I got is a 2 to 7 power so inside at shorter ranges the 2 power will work and if you go outside to longer ranges you still have up to 7 power
I started with a reflex site that had 4 different reticles and found that at 50 to 75 yds the red dot obscures the whole center of the target, the dot covers about 4" to 6" of the target at those ranges so it did not work for me as far as precision shooting since the dots cover the whole black circle in the center of the target. For varmits or squirrels or other small critters they cover too much to be able to get an accurate head shot since the dot covers more than the whole head. I think the red dot type of sights are good for large targets and for large moving targets, like for military use, but for targets and shooting within a 3" circle or tight shot group it is too hard to use them at 50 to 75yds.
I then changed to the MarkIII 2-7x32 (without the attached red dot) that I bought from a gun supplies company on Ebay for $76 with free shipping. I sighted it in and the results are on a thread I posted last week. With the scope set on the 2 power to the 4 power I can keep both eyes open so for moving targets it works great.
I was able to shoot a much tighter group at a target with the scope and after it was sighted in I shot 14 rapid fire shots all within a 2 1/2" grouping with 6 hitting in the 1" bulls eye circle.
I decided that the 2 to 7 power is all I need considering the accurate range of the 22LR. Since it is a quick release mount if I want to change back to my reflex site at any time I can. Since the scope can be used with both eyes open and has a good wide field of view I was able to remove the iron sights and have found that just the scope will suit all of my needs for this rifle.
Here is a 14 shot rapid fire grouping at 50yds, the whole black circle is 3" in diameter and the center cirlce is 1" (about the size of a quarter)
The MarkIII does have an illluminated reticle in red or green, in dark conditions it does cause glare on the lenses but in daylight it works great.
I also read everyone's reviews of the NcStar MarkIIIs and since they have great customer service I figured if I did have any problems they would take care of them or they would replace the scope.
You can see my review of the reflex and scope and photos of the targets on a thread I posted last week called sighting in my reflex and MarkIII 2-7x32 scope and I hope it can help you
So for me I found a scope works best for the type of shooting I do. I like to be able to put a group of shots into a 2" group and it is hard to do that with a red dot type of sight.