I've had two Springfields for several years now, both stainless and both with the "Loaded" option package: A full-sized 1911-A1 and a Champion 4". Both have given me great service and I consider them to have been solid values, especially for the modest prices I paid.
Many custom 'smiths, including the redoubtable Alex Hamilton of Ten-Ring Precision, have stated that they consider a plain vanilla Mil-Spec Springfield model to be the most cost-effective basis for building a custom 1911 on today's market. I'd consider that to be no mean endorsement.
I have no personal experience with the polymer finishes on Springfields, but the one on my CZ97-B has proven to be extremely tough so far. I'm not big on Parkerizing per se, as it's not very tough or particularly corrosion-resistant on its own. Apply a modern polymer formula over it though, and it's a whole other story. If that OD is poly, it should be pretty tough. If it's real Parkerizing you'll want to keep it coated with a good preservative product to keep corrosion at bay. Either way, you'll likely have a good, basic 1911, and that ain't a bad thing.