Nice one!
Hey man, I do believe you are familiar with YoYoGames? I've seen some of your songs you posted on the forums for Game Maker, and I mainly wanted to tell you that I've used of your songs in my game Heart of Darkness here:
http://sandbox.yoyogames.com/games/14 8189-heart-of-darkness
I like your songs for the same reasons I like this one. It has some awesome modulation and driving, pulsing rhythms. The reason I voted 8 though was for a few factors. I think the melody may be drowning out the drums a bit too much, but then again the drum sound quality may not be the most realistic either. The only other thing I can hear is once and a while I'll hear a slightly off-color dissonant chord where a lot of different notes and instruments clash. Try to include more repetitive and catchy melodies. Anyways, that's just my two cents on it, but good job otherwise!