I own and regularly carry a standard grade Norinco M1911. The slide, barrel and frame are first rate. The internal parts and grips were crap. I bought it used from a friend. The first time I cleaned it, I went to put the frame down and COULDN'T! The Gunscrubber I'd used to flush it out had melted the grips to my hand! They appeared to be made of something akin to polystyrene. I had some problems with the hammer "following", so I pulled the mainspring housing to look at the leaf spring. The spring was BRIGHT red with rust. Apparently it was just bare metal. My smith replaced the trigger mechanism parts and I replaced the melted "GI" grips with Ajax fake ivories. It's got a ball gun legal 4lb. pull. It's now 100% and looks good with the new grips. I frequently carry it concealed. It's reliable, controllable and accurate, with both 200gr. Hornady TAP and Speer 230gr. Gold Dots. I greatly prefer the 200gr., but the last time I needed carry ammunition I couldn't get ANY.
The RIAs have a decent reputation. I think they're similar in manufacturing quality to the Norincos, albeit with better small parts. I saw my smith do a "trigger job" on one by forcing the hammer forward. That rounded off the burrs on the hammer and sear. Probably took a pound or two off of the trigger pull. As with the Norinco, slide, frame and barrel are first rate. I suspect that you'd do a lot less "replacing" than "tuning" with the RIA.
Before I got laid off, I was looking at .38 Super RIAs. I still intend to get one since the next most affordable .38 Super M1911 is probably going to run me a minimum of twice what the RIA will.