Beat Maker is the way to go for that 2001 sound.
Either that or learn how to mix the project like 2001. Dre has had Tritons MPC's Moogs, Live Bass Players, Guitar players, actual choirs ect..... on some of his projects, and really its all available to you.
You probably have an emulation of most things he used aside from the record samples that he's used.
Dont over think it, instead go into your patches and find one that sounds simular to his and then tweak it. Run it through a "warmer" plug in, or a analog simulation plug and mess with the eq.
Youd be suprised how close you already are.
Now talent wise, if you suck then you could buy Dr. Dre's MPC on ebay and would still suck.
Look how many people tried to emulate the Kanye or Lil Jhon sound in 2003-2006. Same patches and programs (especially since you saw them endorsing it in an add and bought it) but even still the tracks other people made didnt stand up often enough.
Question:
How many MPC kits are out there?
Triton, Motif?
808 kits
Moog VST's
SSL Mixer and Channel strip Plug-ins
Answer:
a ton of them, but how many people have talent and knowledge. I promise it isnt as many as the number of copies sold, of each of these programs.
Jordan shoes dont make you play like Jordan, they can only inspire you to play like Jordan.