I've got an equal blend of sounds, some demo, some I paid for....I just know how to turn bullshit into sugar and wine for the most part. I can also listen to samples and know when it just can't be done. Let's put it this way....through all the years I've collected, bought, traded, swapped sounds, I'm probably sitting on about 6 - 8 DVDs worth of sounds. Many of them I use for different feel, some I hardly use at all, some I haven't even heard yet. It takes time to collect a decent stash of sounds, but it takes even more time to sort through them and see how you can make them work for you.
You should do a google on free and demo soundfonts, drumkits, etc. I think you might find that extremely worth your time.
Fiev.