Pre-ban is pretty meaningless in an M1A unless you want a bayonet lug or a pistol-grip stock. For a plinker/hunter, no need for a match gun, in fact the smaller aperature on the NM rear sight is worse for hunting.
Springfield guns have a mixture of USGI parts and cast reproduction parts. Not always a big deal, but I had the trigger group on a Springfield NM gun fail after several thousand rounds. It was a cast reproduction housing, and couldn't be fixed. I had Fulton Armory send me a USGI group w/NM trigger mod. Springfield also had a recall of some cast bolts after a few catastrophic failures. They have their own gear to make forged bolts now, but there are still rifles out there with cast bolts (I got one, replaced it with a TRW bolt).
If you have the cash for a loaded stainless from SA, you'd be better off to buy a stripped SA receiver and have someone build you a gun. There are a few really good M1A 'smiths out there. I had Clint McKee at Fulton Armory build me a standard-grade M1A on a Springfield receiver, and it is a thing of beauty. He uses all USGI parts (except where specific match-grade parts are needed) and hand-fits everything to perfection. The fit and finish on the gun he built for me are far above anything I've seen from Springfield, and waaaayyy beyond the GI M14's I've used. With a GI chrome-lined barrel and iron sights, it will shoot 1.5 inch groups with Federal match at 100 yards. He takes a long time and isn't cheap, but it won't cost you too much more than that stainless loaded model, and you'll get a much better gun. You could also buy the receiver and a complete USGI parts kit from U.S. Armory and have another 'smith put a gun together for you. The guys at www.gunandknife.com could give you some names.
If you buy used, have a good 'smith check the crown for cleaning damage (very common on M1A's and Garands) and the throat for erosion. Cole's Distributing is great for mags- their 'used VG' mags are great. Get a gas cylinder wrench, a bore guide for your cleaning rod, and a bolt roller greaser.
Good luck- you've made an excellent choice in a new rifle!