Nice heartbeat in the intro, builds anticipation! not too sure about the synth in the intro, sounds a little trance like to me, but it's still nice. Good pad work. Sub could do with coming up a db or two, sounds really quiet to me, can barely hear it under the pads. Nice drum fills every now and then.
Overall a pretty nice track, but definately need to raise the bass!
I really like this, really chilled out but still somehow pretty epic lol. I agree that heartbeat at the start is awesome it really gets you pumped... (no pun intended).
It might just be me but I think the hats may be a tiny bit too high in the mix for my liking, I really like what you've done with them though. I love the little drum fills too you did a good job making them sound natural.