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.
Beretta PX4 Storm INOX 9mm, Beretta Nano 9mm, Sig Trailside .22lr, Springfield XDm 4.5 .45, Ruger LCP .380, 20"Armalite/Rock River AR15, Remington 870 Tactical Magpul, Swiss K31 7.5X55, Ruger 10/22 50th anniversary design contest rifle