Originally Posted By: MusicStudent
I am in fully agreement with your understanding about 3rd party midi packs (for keys). I have invested in an embarrising amount of these products so I speak from experience. But this is only in the case of Keys. Drums on the otherhand offer a host of great 3rd party options. Check out GrooveMonkey as an example.

I can vouch for Groove Monkee! After Mario and Dan recommending them I tried them and ended up buying their entire collection! What an amazingly sweet library to add to my EZ Drummer 3!!!