Nice song
vi-V-IV-III = one of the best chord progressions for trance (and most songs in general). The piano seemed very dynamic. Nice bassline and accompanying instruments. Tip: if you are afraid of being repetitive, its good to make shorter songs.
Suggestions: ehh, still a bit repetive, and since you have mostly triads on the piano, its stresses the repititiveness. To fix.... Suprise me! Do something I would never expect, but not so akward so that it takes away from the meaning of the song. Have a stop or introduce a new instrument/theme. That's what I do when I feel my songs are really repetitve. Another good trick is to interchange percussions instruments, having just kick here and clap and hihat here, which I do see in this song, which is good. In short, mix in some new things now and then within the song. But since I do enjoy this song, I give you a nine and a five.