I'll chime in here with my experience...
I got a RIA .45 in trade for a j-frame revolver. I LOVE 1911's, and the gun looked good...no, really good. Nice finish, tight fitting, functioned perfectly and felt great....
Until I took it to the range. Talk about blue with frustration. I had three different mags and NONE of them would reliably feed the bastage. I had 3 point jams one after another, sometime jamming every round through an entire mag. Big jams, that required 2 people to clear the gun. Dented and misfigured brass. Spoke with the factory rep, was told possibly the feeding ramp was angled incorrectly. It could be fixed if I wanted to part with it for while. Oh, I wanted to part with it alright....
Not much fun, eh? I felt like a total retard for having traded off a gun that was 100% reliable for the RIA. I was told by many that it could be fixed...yada yada yada. I hate hearing that when it comes to firearms.
I traded it shortly afterwards for a K frame revolver and havent looked back.
I wont tell you what to buy or not to buy the RIA, but if you do get one, try and get a trial policy on it. See if that gun will work for you.