Had this very same discussion with two guys....possibly Kerby and casper? at Brookfields recently.
Whilst I fully understand that the top DJ`s may have spent lots of time and money amassing great collections and hats off to them, the truth of the matter is that punters just want to hear and dance to great tunes so whether they are OV or bootleg,re-issues makes little odds and it is more than likely that the future generation DJ,s will have to play copies as OV is becoming rarer and more expensive.
PS. personaly as a punter I would dance to any copy of Eddie Parker "I`m Gone" anytime, at any venue.. if it was copy or not, and I`m pretty sure I wouldn`t be on my own on this.