I've had a 75B, and 75D PCR (lightweight alloy framed compact) for over ten years. The 75B is primarily a range and home defense gun, while I carry the PCR. I also have the Kadet Kit which works on both. It needed no fitting, and has been very accurate, reliable and just plain fun to shoot.
While I'm a big 1911 fan, and have a few, I would pick a CZ over a RIA any day of the week. Save your money and get a higher quality 1911 like a Colt.