All pd's are different. But I always listened to the first 20 seconds or so.....If it was good, I kept listening. If not, in the garbage. Typically I would get best of stuff, with the best stuff on the disc first. Now if by chance, I was interested in hiring, I would make the call and start the discussion. Usually, in that initial call, I'd very bluntly and honestly tell the potential employee how much money I could pay them and see if they were interested. I can't stand haggling about money so if they needed more than I had, I could move on and so could they. Not waste anyones time.
If they seemed interested, I would then ask them for an un scoped air check. As a pd, I would rather not get a "greatest bits" check. I want to hear what you sound like on an average day. Outside of mornings, I'm looking for specific things. The first thing I'm looking for is the basics. If your selling the station name and positioner without blowing through it to get to the stuff you think is important, is whats important to me. If a jock has mastered that, chances are they know what they are doing. Once I get past that first litmus test, I start looking for specifics. Which I won't go into because it varies from shift to shift and format to format. Bottom line, jgamble, at least for me......grab me in the first 20 seconds of your check, but also make the rest of it stand up as well. And get ready to be asked for un scoped.