Well, I won`t be original but if I had to limit myself to only one sample pack it would be Loopmasters - Deadmau5 XFER, it has lots and lots of usable stuff.
I have lots of sample packs, when making kicks and snares I usually mix samples from various packs, I love disco themed ones like Sample Magic Nu Disco. Also lots of classic drum machine samples and a lot of free random stuff from the internet.
My sample folder is like 60 GB, damn! I choose my favourite samples from a sample pack from time to time and put them categorized into a folder called Favourites.
Cheers!