Re: IOR vs. USO scopes
I own both and USO wins in just about every category, except glass quality, where the two are tied. USO has a better power adjustment, better parallex control, better illumination, better turret feel, EREK is awesome, and many many more reticle choices. Looking thru the IOR always makes me feel like I'm missing something; maybe this is because USO's objective lens is bigger (not sure). USO has a better fit and finish. USO customer service is amazing - I call USO and Becky somehow always remembers what scopes I own. The 3.2-17x that you are looking at is a wonderful scope and you will be thrilled with it. You will also get good resale value if you ever move on.
Of course, the two are not the same in price and IOR offers outstanding value for the money and I'm very happy with their products. I don't love their MP-8 dot reticle, but have learned to use it w/o issue. Scope glass is great, even in low light. Turrets track fine, although it is not always easy to see where you are on the turrets travel. The scope is tough as well and the 35mm tube feels very strong. The rings that come with the scopes are also rock solid and great value. Scott at Liberty is great to deal with and his shipping policy is top-notch.