Your pitch bend line sounds really great, it is a cool melody and the sound works well for it. The drums sound good, and help drive the beat forward. I agree that a different string sound would make it sound a little better, and perhaps a little lower in the mix with EQ softening the low mids. You also need to leave a little more room for the snare to punch through the mix. Just tighten and mixing and you have a nice sounding track!
tight beat but seems like it can use a bit more power behind it...maybe pump up the kick a bit? a different synth sound? sounds tight though. Keep me updated with this one. Check out my beats on my soundcloud on my sig and let me know what you think