I'm looking at just doing simple, demo-style recordings in Garage Band. Not pro level (unless it's a bargain), but more like sketchbook stuff. I'd like to find some inepensive drum software to put in decent, fairly natural sounding drum tracks. Back in the day, I used an Alesis HR16 drum machine, and that level of quality is kind of what I'm looking for now. Any info would be appreciated. Thanks.