seems like most of you are basing your replies on your fav producers moreso than people who are actually deep diggers. the reality of it is that most of the deepest diggers are people who aren't even making records. cats like soulman, kon, amir, beni b, dusty kid, dan the beatman, and i could go on for days. i doubt you will find very many producers that can hold a candle to these guys collections. alot of people think alc is a deep digger but he'd be the first to tell you he doesn't spend alot of loot on wax, whereas cats like shadow and rd live in the bins. and if you were gonna base it on cats who are actually making records, how come no one mentioned some of the most notorious diggin artists/producers like q-tip, buckwild, showbiz, extra p, biz markie (one of the illest collectors by far), mr walt, evil d, finesse, etc etc. its a known fact that all of these cats are deep in the crates.
at the end of the day this question is virtually impossible to answer without actually seeing or having firsthand knowledge of people's crates. and keep in mind, having alot of wax doesn't mean you have good wax.