Cz 550 Americans and Safaris were heavy pigs and many needed a once over, but the higher end guns have no equal. Like American companies it’s not fair to compare price point models to higher end offerings. Think Walmart ADL. They also had features not found on the other guns in question.
Moot point though as they don’t make them any more and the higher end guns were extremely rare in the US. I’ve a couple of the 550 standards from Europe and wouldn’t trade them for anything
