I have the 3200 5-15 AO tactical and a monarch gold 2.5-10 sf. I compared the two at the same power (5 and 10) and the monarch does have better glass. The big difference comes durring low light conditions. I could clearly view twigs, leaves and other detail a full 10 minutes longer on a tree line about 100 yards from my house with the nikon than with the bushnell. If you are willing to spend the extra for the nikon it is the better of the two.
Both seem to track true and hold there adjustments while dialing in different drops.