I've heard of these 2 drum software packages.

Addictive Drums http://www.xlnaudio.com/?page=produc... addictivedrums and Steven Slate Drums http://stevenslatedrums.com/

Which one should I buy for my cousins' upcoming birthday?

Is one easier to use than the other?

I don't understand what you are talking about. If you want software reviews write me at [email protected]. DrTom4444