Quantify the difference between Holland Amperex e188cc/7308 and USA Amperex 7308/e188cc?

Heerlen made e188cc Amperex  versus Hicksville made 7308 Amperex ...  How do they differ in sound character?
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I consulted all the readily available and popular sources. Looking for user experience, especially comparing and contrasting these specific flavors.
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