I wanted that Deltron intrumental, but I decided to get the album instead. I bought some Cochise and Dre instrumentals back in the day, plus a few other ones. I like the AZ - Final Call instrumental album. What I've learned though is that most of the time if its not from someone I've heard of before, its a major disappointment.
But I have and I would buy good instrumental albums. Actually if I could find a really tight instrumental album, I'd probably bump it in my car more than 2Pac. I love freestyling while I drive.