Shameless plug I know, but I have a Nightforce BR in the classifieds for less than $1k. To my eyes, the BR models are optically better than the NXS and definitely better than any Leupold, Vortex, or SIII (other good options). Downside to the BR is the limited internal travel and to some, the front adj obj (but my guess as to why its better optically than the NXS due to one less lense). But, you get great glass, excellent tracking, outstanding reputation/warranty/resale.