Great MIDI drum loops across every type of music genre you can imagine. Get it on sale and its worth every penny... heck - its worth the regular price, but you can usually get it on sale and that just makes it a no-brainer if you are looking for a wide range of drum loops to drop in. I use it with Toontrack and it works flawlessly.
On sale it's a great bargain---the better part of 38000 MIDI loops for GM and the bundle also comes with installers for ToonTrack, Addictive, BFD, etc. I'd be lying if I said I've gone through anything but a small fraction and a sampling of the files but what I've auditioned sounded fine. Five stars for the quality so far and bargain factor.