I have the SIG P210A (non-target) and it is my favorite pistol out of the 75+ that I own. I do not have any experience with the Swiss and German P210s. However, my American P210 is super smooth, trigger is outstanding, and it easily drills single holes. There is not rattle or slip in the frame/receiver fit. Reliability has been 100% and it is just a joy to shoot. I paid $1000 for it used (2 mags through it when I got it). I consistent see them for $1300 although SIG discontinued the standard model is only producing the target version which goes for about $1400-1600.
To me, I doubt that a Swiss or German gun will perform better and, if so, I don’t think it can possibly be 2-3x better (2-3x being how much more expensive the original P210s are compared to the American versions).
Also, keep in mind that some people will claim that the originals were hand fitted and, therefore better. While hand fitting is done to ensure the removal of imperfections and make a gun smoother and ensure better parts interaction, having to hand fit indicates imperfections in the machining process. Hand fitting fitting is less common today partially because of the cost, but also because modern manufacturing processes enable companies to produce products to greater tolerances, thereby negating or reducing the need to hand fit. My point is that a lack of hand fitting does not necessarily mean a less precise product.