Here is a nice article by Anson on his site that was posted about this subject last year:
https://prewarcards.com/2019/08/12/t...k-your-poison/
I totally agree with him concerning the artwork depictions...both are cool cards, but the artwork on the black cap version is more refined when it comes to Matty's face. The black cap depiction captures the look of an intense competitor, while the face on the white cap version has always appeared to me as if it were airbrushed into vacant complacency.
I think the bulk of collectors prefer the look of the black cap version, and even though the white is much less common, both in the future might maintain similar values.
Even my low condition black cap is just so mesmerizing to look at (at least in my eyes)...
Brian