Lorra very salient points there…considering the quality that Ian consistently puts out I think I’m gonna go with what he is saying…I’d rather do another song than P about mastering…one day this…the next day that…we’ve got too much choice nowadays, watched an interview with the guy that did the “I feel love” Donna Summer track, can’t remember his name but the track is famous for the first use of computerized arp bass (I belive,correct me if I’m wrong) anyway, he said …in the 70’s we’d spend half an hour sorting the bass out then move on but nowadays people are spending a whole afternoon sorting the bass and the next day sorting the snare sound…he reckoned it was nuts…I reckon he’s right! 
at the end of the day it’s about the song…not the production…production needs to good enough to hear the song ok of course…I think foolomons example is very interesting from this point of view.
best to all , Kevin