They are basically the same product this is a marketing trick from MSI. You can see the discussion on
Reddit. But appearance-wise I think Suprim X looks better if the price difference isn't a problem. about the MSRP difference, I'm not sure, But in the resellers market, it varies between 200-500 $ difference (depends where you buy they can sell for whatever they can charge you!!). For MSRP drops check nowinstock or discord channels (search on google) - For resellers check eBay, StockX, Ethergears etc... .