Just a question for the general population that watch over their miles as closely as their portfolio. Every year I attempt to consolidate my miles w/AA and/or oneworld. I have been PLT for the last five years and fly infrequently on other carriers, usually Delta. I am venturing to Perth, Australia for a business trip and have thought about doing LGA-YYZ-HKG-PER-HKG-YYZ-LGA largely so that I can obtain the 50K bonus on top of my 100% PLT bonus and J class bonus. I estimate that it will give me approximately 110K miles for this trip. I could however fly JFK-JNB-PER-JNB-JFK on South African Airways therefore significantly reducing my overall miles, not contributing toward this years' "premium commitment" but allowing me to spend a couple of days after PER in JNB, a city I have never visited before. So fellow mileage addicts, what do you suggest?