Mus, what I did is audition all of the adpaks/midi paks over at XLN and then selected the ones I really liked........I ended up getting every adpak (except for th Metal one...that's next)

. IMO, they are ALL very good, very useful, and quite easy to use.
Don't forget to check the Beat Transformer in AD2.......it allows you to customize the beats in so many ways. You can control velocities; add accents; randomize timing and velocity; mute kitpieces; alter the speed to double time, half time 75%, etc...