I have Kore2 and a ton of Kore Soundpacks, love them all. One problem I've had though is that Kore/Kore2 is such a system hog. I've had projects that, half way through recording, I would have to convert all the mixertracks to WAV files, open a new session, import the WAV's, and then I was able to add more instruments. On top of that, I would constantly have to increase latency in order for the computer to run smoothly. All of this is running on a pretty high end computer (4gig ram, 3.0 CPU, 320g HD, etc). Pain in the ass, but still worth it.