I lived through the glory days of Florida pill mills... So, from One doctor, the best i ever did was:
-180x80mg OC
-300x30mg blues
-120x10mg Opana IR
-90x2mg bars
Those were the days man... You have to realize, "doctor shopping" wasn't the whole game. The real biggie was they enabled scripts like this on your first visit. Won't go into more detail since it's still done today, albeit for far less extravagant amounts.