I've owned three (3) Para's, and I've been cured of the desire to ever have one again. Their small part quality is frankly appalling, and their adherence to standard 1911 dimensions and tolerances is, um, liberal. I still own one (GI ExSpurt) but it was the only keeper of the bunch, and only with work.
I am reasonably fond of the Armscor offerings, although I have found that they, also, trend towards liberal dimensions. At least in their instance, the guns are solid enough that you won't feel compelled to do much bits-swapping and run into issues as a result. As shipped, their guns just pretty much work and will likely continue to work for a reasonable time. Can't really say that's been my experience with the Para's.
If you want a gun to which you can readily fit 'standard' replacement bits, I have found that you really need to move up-market into at least the Springfield/Kimber/Sig range.