Original Blue Notes vs Reissues

I am trying to understand the hype with original Blue Notes sounding better than say Music Matters, Classic Records Reissues, or Tone Poets reissues.  I have many originals and I am trying to figure out other than the collectibility of the record, the Original Blue Notes really just different sounding, certainly not better than the newer reissues mentioned above.  Unless you can get the original for about 20 bucks, I see no reason to spend thousands of dollars on originals.  Most of the time, they are not as good  anyways, noisy, and not in the best shape yet many really push those older pressings, why?  Other than collectibility, why?