I had the Nikon 800 for a few years and it worked great, I gave it to my Dad 2 years ago when I upgraded to a Zeiss and the Zeiss is just awesome! Over 1000 yards easy.

Nikon optics in general are pretty nice, I have loopy binos but I wouldn't hesitate to buy Nikon.

I also just bought a Burris Eliminator, haven't mounted it on a rifle yet but it looks to be pretty darn good...