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.
Walther PPS M2 9mm, Ruger LCP 2, GLOCKS- (19, 34, 29 Gen 4, 20SF), Beretta 21A Bobcat, POF USA P415 14.5", P415 7.25", and P308 14.5", Sig 556 Classic SWAT, Colt LE6920, IWI X95 OD green, Kel Tec KSG, 6.5X55 Swedish Mauser CG 1903 M96/38, 6.5X55 Swedish Mauser CG 1908 M96, Swiss K31 7.5X55, BNZ 42 K98, Ruger 10/22 50th anniversary, Tikka T3 CTR .308, Winchester 1200, Weatherby Vanguard S2 .223 Varmint