Someday, I need to take photos of my SIG's. I'm primarily a target shooter and also keep a couple of HD and SD guns. I have two US SIG's" a 1911 .45ACP Target and a 1911 .45ACP MAX. The German models are: a X-5 L1, a X-6 L1 and a p232 (SD).
I recently disposed of a SIG p210 6 with the .22lr conversion kit. It was new when purchased; I ran less than 50 rounds thru it.
I'm not technically qualified to say one group of guns is better than the other, quality wise. But, the German made guns look and feel like they're more precisely made, feel like a fine mechanical watch. They're all accurate and reliable.
I didn't feel the p210 suited my requirements. It's beautiful, well balanced and accurate, but not a target gun. I think a collector will enjoy it.