My two favorite scenes would have to be:
The one where the bar is being closed down for the night, and Matt Hughes is the last customer. He gets deepthroated by a true professional many, many times.
The other is from the Deep South set, where Jeremy Jordan is servicing 6 or 7 guys and gets held a few inches above a huge cock (I think it's Chad Hunt's).
If I think long enough, there are many more. Even the HungLadz scene with Steven Prior in the apartment is close to the top of the list !