1) Will I play this for months? or just a few times and then move on?
2) Is this something I think is cool, but most crowds I get in front of won’t like it?
3) Does this track sound like 10 other tracks I had gotten in the past? or is it unique?
4) If you’re picking up multiple remixes of a tune, which one will you really play the most? Eliminate the others.
I also agree with GRE. Sleep on it, then listen again. Sometimes the next day a track that was “wow” to you ends up being “eh”.
I also notice sometimes that DJs will want to buy the “DJ Tools” of tracks along with the track. I would tell many who have to whittle down a list that unless you really are going to passionately use it, dump the DJ Tools/Accapellas. I have loads of them from my past, but I really don’t use them very much.