I have the NF NXS 8-32X56 with the MOAR reticle , zero stop and high speed turrets on my 308 TRG 22 and AIAW. I debated for quite a while wether to go the S&B 5-25X route. But after comparing a friends S&B to another friends 8-32X Nightforce and considering I don't shoot more than 600 yards I decided the Nightforce was a better choice for me. If I was shooting 1000+ yards my choice might have been different. But I am extremely satisfied with the NF 8-32X56 scopes. I don't think you would be sorry if you choose the NXS 8-32X56 scope for your DPMS SASS. By the way I also have a DPMS SASS and have a NF 5.5-22X50 scope with ZS, HST and the MOAR reticle on it.
Thanks for the words of encouragement! I am definitely getting the NXS 8-32X56 with the zero stop. After reading all the scope info I have a feeling I will likely end up with more than one high end scope. Also I am starting to feel the need for a bench rest rig. Oh well...
Now the only question is which mounts to use???