Choosing between Reissue and Original pressings


Reissues have been common since quite some time but these days as vinyl has picked up momentum again, there have been some very high quality reissues from labels like Classic, Analogue Productions, Speakers corner, MFSL, Boxstar etc. For any particular album how do you decide whether buy a good reissue or get a good copy of original pressing from ebay ?

For the sake of discussion lets keep out exceptions where the original pressing is too hard to get or too expensive. In most cases it is possible to buy a copy of original pressing for sane amount of money if one shops carefully on ebay but I have also found that quite a few times a high quality reissue can sound better. Whats the general thought among hardcore vinyl followers here ?
pani
I agree with Viridian about 40 to 50 year old tape loss,music I listen to.I stopped buying reissues years ago.There are so few exceptions it's not worth wasting the money to find out for me anymore.I got tired of wasting 25-30 bucks for an LP and after 2 minutes of play it comes off the TT never to be played again,original better.The tape loss on Zappa's Hot Rats classic reissue is unbearable for me to listen to.Reissued vinyl of 45 year old recordings is just not happening for me or worth the gamble to buy.
Playpen
There are so few exceptions it's not worth wasting the money to find out for me anymore.I got tired of wasting 25-30 bucks for an LP and after 2 minutes of play it comes off the TT never to be played again...

Yes. That's it in 2 sentences.
Patience is also a vinyl virtue. I've come across 'Reckoning' G. Dead & 'Friday Night in San Francisco' DiMeola, McLaughlin, DeLuca for less than $10 total by accident. These currently sell new as reissues for almost $100. 'Must Have' is a relative term.
Playpen,
Well stated, I came to that realization several years ago.There certainly is good sound to be found in records but the 'hit and miss' factor is frustratingly high.
Many vinyl records are really just mediocre and not worth the chase and expense.For many years I was a strong vinyl advocate.
Regards,
Punk and independent pressings from 1960's onward are more often than not on flimsy/low quality vinyl. Reissues (except for those pressed in GZ, or at Archer, EKS or Musicol) seem to be better vinyl, though typically are remastered, which is a whole nuther topic.