Why do I keep torturing myself with remasters?

They're all mastered for today's systems. I like those mastered for vintage Pioneers and Sansuis.

Right. I stopped buying ANY remasters, LPs or CDs, with exception of some Japanese CDs.

In most all cases, the original, in the original format, from country of origin, is best sounding!

Which Bowie?

For LPs, got to discogs.com or wikipedia, find the original record company, get an original copy of the LP from the country of the original record company.  Look for the lowest matrix number in the deadwax, i.e. 1A.  If you find a stamp or writing of the original mastering facility in the deadwax, that is even better.  For example, Sterling, Masterdisk, TML (The Mastering Lab), Kendun, Precision, GP (George Piros), Van Gelder, RL (Robert Ludwig).  Forget reissues including the dreadful half-speeds.