This summer I bought a Walnut stocked NM and a Birch stocked "collector edition" standard M1A with an unissued surplus GI stock on it. Since then I have shot the NM out to 300yds with open sights, and the standard to 100 with both open sights and a Springfield scope set-up. Out of the two, I am most impressed by the standard model. Using Remington 168gr HPBT match, it printed just under one inch off the bench using open sights. Last week, I shot some Black Hills 168gr Moly coated BTHPs and printed just under .5 inches off the bench with the scope.
So far, all of my shooting with the NM has been at 300 yards, so I cannot directly compare the performance of the two. I can't see how much better the NM could do though; and to tell you the truth, I scared as hell that I won't get that expensive assed gun to shoot as well! I can say that it will print a 4" group at 300 yds from the prone position, just not with me behind the trigger........yet.
If I were you I'd get the standard rifle and leave the NM for those who want to shoot in high power rifle competitions. Lew Horton Distributing carries the GI surplus parts "collector's" models, and their price was around $980 I think. If you throw in some accessories to get over that 1K mark, they will ship for free.
What ever you do, get one of these guns. I put it off for a long time and am sorry that I did.
Saleen