Thanks GB....I mis-spoke....I wish they'd make a II without AO.  I've actually had 3 of the VX-I in 4x12x40 and sold each and every one within weeks for that exact reason!  I bought one, it was blurry and made me kinda crazy, so I sold it.  Then, I THOUGHT the reason I didn't have optical clarity was because of some astigmatism in my right eye, which I had corrected with a different contact lens.  The blurryness corrected itself in my IIs and IIIs.  So...I went out and bought a couple of VX-Is in 4x12.  Problem re-appeared so out they went.  I think that when you get over 10x theres some adjustment needed all that way around....I suppose parallax is the problem.  
As an aside, I have an uncle with a Swaro 3.5x12 that doesn't have AO.  When he dials in at 10, 11 or 12x, the crosshairs get thicker and evidentially that's how they adjust for parallax.  Not a solution for either in my mind.