Intense.
That was pretty damn awesome man. The drums are a little overpowering, and the song in general sounds a bit muddy. Filtering out the really low frequencies will help with that. Oh, and I also really like the ethnic drum break in the middle!
Keep it up, I know how annoying it can be to get good sounds out of Garageband since I use it too. Mess around with the multiband compressor and graphicEQ to get some good sounds.
And if it's not too much trouble, check out some of my stuff! =)
Once again, keep up the good work.
4/5 & 9/10