While there is nothing wrong with RIA 1911s, of the two I would go with the Norinco. The slide and frame are forged, while the RIA is cast. Also, as stated by others, there aren't any more Norinco 1911s being imported. Ultimately, the Norinco would be a better base gun should you choose to start customizing it. Just my two cents.
Glock 20SF, Glock 30SF, Hk VP9 9mm, Walther PPQ M2 Navy SD 9mm, Walther PPS 9mm, Glock 20SF, Magnum Research MR9, Star Lancer HK .22lr, Beretta 21A Bobcat, Spreewerke CYQ P38, Ruger LCP, Patriot Ordnance P415, Patriot Ordnance P308, Kel Tec KSG, Norinco NHM90 5.56 converted to pre-ban, 6.5X55 Swedish Mauser CG 1903 M96/38, Swiss K31 7.5X55, BNZ 42 K98, Mosin Nagant M91/30 1934 Tula, Ruger 10/22 50th anniversary design contest rifle, Tikka T3 CTR, Ruger M77/44,