I like the groovy electric bass at the beginning, and the drums were nice and crisp and loud. The synths at :20 also added a lot to the piece. I don't think the transition at :38 was very smooth, though. I've seen the pause-transition work in the past, but I think you needed some reverb or something in there to make it flow a bit better. The part at :40 was cool, though. I also thought you needed a smoother transition into 1:20. The part at 1:20 is interesting, but it's kind of hard to follow the rhythm there, maybe because you used too much reverb (?). This track doesn't make the best loop IMO. It seemed to me like you were going for a fade-out ending, and then in suddenly looped back to what was a rather unrelated riff at the beginning. There are a lot of interesting ideas in here, though. It has potential. Keep at it! ;)